A production process for compressor balance block using low-cost high manganese steel

Abstract

The invention relates to the technical field of metal powder processing, in particular to a production process for compressor balancing blocks using low-cost high-manganese steel, comprising the following steps: step one, using ferromanganese, scrap iron, steel bar heads, manganese steel scrap, copper wire and ferrosilicon as raw materials and smelting them in order of melting point from high to low; step two, atomizing the smelted solution, and then centrifugally dehydrating it after water atomization to obtain dry powder in irregular particle shape; and then drying the dehydrated metal alloy powder; step three, adding the dried powder into processing equipment for screening and mixing; adding micro wax powder, lithium stearate, green body enhancer, flow rate agent and spindle oil during the mixing process, mixing evenly, and then pressing and molding to obtain a compressor balancing block green body; step four, sintering the compressor balancing block green body, and then shot blasting the sintered compressor balancing block green body to obtain a compressor balancing block.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder processing, in particular to a production process of a compressor balance block using low-cost high-manganese steel. Background Art

[0002] It is becoming more and more common in the air-conditioning compressor industry to use high manganese steel balance blocks instead of brass balance blocks. High manganese steel balance blocks are devices used to ensure the balance of equipment. During production, metal powders need to be processed by processing equipment and finally pressed into shape to produce high manganese steel balance blocks.

[0003] In the prior art, in the process of making high manganese steel compressor balance blocks using metal powder, the metal powder needs to involve multiple processing steps, such as batching, smelting, water atomization, centrifugal dehydration, drying, screening, molding and sintering. Since the particle size of the metal powder has an important influence on its compressibility, sintering performance and the performance of the final product, screening can separate metal powders of different particle sizes to obtain powders with a more uniform particle size distribution. This uniformity helps to form a dense green body during the pressing process and improve the sintering efficiency and product quality.

[0004] In the prior art, in the process of producing balancing blocks using metal powder, screening and mixing are mostly used as two independent processes. The metal powder is sent to the mixing equipment after screening. However, in the process of sending the screened metal powder to the mixing equipment separately, the screened metal powder will be piled up and squeezed during the transportation process, and may agglomerate due to its fine particle size. The agglomerated powder particles may be difficult to disperse evenly during the mixing process, thereby affecting the mixing effect.

[0005] Based on this, a production process for compressor balance blocks using low-cost high manganese steel is proposed. Summary of the invention

[0006] In order to solve the above technical problems, the present invention proposes a compressor balance block production process using low-cost high-manganese steel.

[0007] The technical solution to achieve the purpose of the present invention is: a compressor balance block production process using low-cost high manganese steel, comprising the following steps:

[0008] Step 1, using 10%-25% of ferromanganese, 20% of scrap iron, 30%-40% of steel bar heads, 10%-30% of manganese steel scrap, 0%-15% of copper wire and 3%-4% of ferrosilicon as raw materials and smelting in the order of melting point from high to low;

[0009] Step 2: atomize the smelted solution, and then centrifuge to dehydrate it at a centrifugal speed of 550 r / min to obtain a dry powder in an irregular particle shape; and then dry the dehydrated metal alloy powder at a temperature of 200-400° C. for 2-2.5 hours;

[0010] Step 3: Add the dried powder into the processing equipment for screening and mixing; add micro wax powder, lithium stearate, green body enhancer, flow rate agent, sintering activator and spindle oil additives during the mixing process, the additives account for 2%-5% of the total weight of the stainless steel powder, and after uniform mixing, the chemical content is: Mn 13%-25%, Cu 0%-15%, Cr 0%-1%, Ni 0%-1%, P 0%-2%, Si 0%-2%, C 0.5%-2%, and the balance is iron, and the compressor balance block green body with a density of 6.0-6.5g / cm³ is obtained by pressing and molding;

[0011] Step 4: sintering the compressor balancing block green body at a sintering temperature of 1050-1300° C. for 30-60 minutes, and then subjecting the sintered compressor balancing block green body to a shot blasting treatment to obtain a compressor balancing block;

[0012] The processing equipment in step 3 comprises a shell, the inner bottom wall of the shell is rotatably connected to a rotating rod, and a screening and mixing component, a pre-mixing component and a pressing component are respectively arranged inside the shell, and the screening and mixing component comprises a screening unit, a mixing auxiliary unit and a mixing and feeding unit;

[0013] The mixing auxiliary unit comprises a one-way bearing 2 and a one-way bearing 3 respectively fixedly mounted on the surface of the rotating rod, a plurality of trapezoidal plates and trapezoidal groove plates are respectively fixedly mounted on the surfaces of the one-way bearing 2 and the one-way bearing 3, and one end of the plurality of trapezoidal plates and the trapezoidal groove plates are respectively fixedly connected to a lower mixing bucket and an upper mixing bucket;

[0014] The screening unit comprises a screening bucket arranged above an upper mixing bucket.

[0015] Preferably, the mixing auxiliary unit also includes a circular tube that is rotatably connected to the upper surfaces of the plurality of trapezoidal plates, the top ends of the plurality of circular tubes are rotatably provided with a rotating drum, the surfaces of the plurality of rotating drums are fixedly installed with arc blades, the plurality of arc blades and the inner walls of the plurality of rotating drums are respectively penetrated with arc holes and through holes, the inner walls of the plurality of rotating drums are rotatably connected with telescopic rods, the top ends of the plurality of telescopic rods are rotatably connected with sliders, the plurality of sliders are respectively slidably arranged on the inner walls of the corresponding plurality of trapezoidal groove plates, the top ends of the circular tubes are fixedly connected with a rotating joint, the surfaces of the plurality of circular tubes are fixedly provided with a one-way valve 1, the top ends of the plurality of rotating joints are fixedly connected with a liquid inlet pipe, the top ends of the plurality of liquid inlet pipes are respectively fixedly connected with the bottom ends of the corresponding plurality of rotating drums, the inner walls of the plurality of trapezoidal groove plates are fixedly connected with spring rods, one side of the plurality of sliders is provided with a sliding hole, the inner walls of the plurality of sliding holes are respectively slidably connected with the surfaces of the corresponding plurality of spring rods, and a feeding annular notch is formed between the lower mixing bucket and the upper mixing bucket.

[0016] Preferably, the screening unit also includes two arc-shaped collecting boxes, the inner walls of the two arc-shaped collecting boxes are in contact with the surface of the screening bucket, both ends of one of the arc-shaped collecting boxes are fixedly installed with magnetic blocks, the two ends of one of the arc-shaped collecting boxes are magnetically connected to the two ends of the other arc-shaped collecting box through the magnetic block, and two arc-shaped grooves are provided on the surface of the shell, and the surfaces of the two arc-shaped collection boxes are respectively adapted to slideably connect with the inner walls of the corresponding two arc-shaped grooves.

[0017] Preferably, the mixing and feeding unit includes a one-way bearing five fixedly mounted on the surface of a rotating rod, a rotating plate fixedly mounted on the surface of the one-way bearing five, a plurality of interference blocks fixedly connected to the upper surface of the rotating plate, a rotating ring rotatably connected to the surface of the rotating rod, two fixed hoops fixedly connected to the surface of the rotating ring, the inner walls of the two fixed hoops are fixedly connected to cylinders, the inner top walls of the two cylinders are fixedly connected to compression springs, the inner walls of the two cylinders are slidably connected to piston rods, the top ends of the two piston rods are respectively fixedly connected to the bottom ends of the corresponding two compression springs, and the bottom ends of the two piston rods are fixedly connected to extrusion blocks.

[0018] Preferably, the upper surfaces of the two cylinders are fixedly connected with a liquid outlet pipe, the upper surfaces of the two cylinders are fixedly connected with the same U-shaped liquid suction pipe, the surface of the U-shaped liquid suction pipe is fixedly connected with a connecting pipe, one end of the connecting pipe passes through the surface of the shell, and two one-way valves 2 are fixedly installed on the surface of the U-shaped liquid suction pipe.

[0019] Preferably, the surfaces of the two fixing hoops are fixedly connected to fixing rods, the top ends of the two fixing rods are fixedly connected to the same lower hopper, the upper surface of the lower hopper is fixedly connected to a fixed semi-arc tube, the upper surface of the fixed semi-arc tube is rotatably connected to a rotating semi-arc tube, the top ends of the two liquid outlet pipes are respectively fixedly connected to the surfaces of the fixed semi-arc tubes, the surface of the rotating semi-arc tubes is fixedly connected to a plurality of hoses, and the top ends of the plurality of hoses are respectively fixedly connected to the surfaces of the corresponding plurality of circular tubes.

[0020] Preferably, the premixing assembly includes a one-way bearing fixedly mounted on the surface of a rotating rod, two connecting rods are fixedly mounted on the surface of the one-way bearing, one end of each of the two connecting rods is fixedly connected to a feed pipe, the top end of the rotating rod is fixedly connected to a three-way adapter, both ends of the three-way adapter are respectively fixedly connected to one end of the corresponding two feed pipes, the surface of the rotating rod is rotatably connected to a storage bucket, the bottom end of the storage bucket is fixedly connected to a discharge pipe, the lower surface of the discharge pipe is fixedly connected to a rotating block, the lower surface of the rotating block is rotatably connected to a rotating tube, the surface of the discharge pipe is fixedly connected to a plurality of right-angle rods, one ends of the plurality of right-angle rods are respectively fixedly connected to the surface of a screening bucket, the inner wall of the discharge pipe is provided with an auger blade, and the auger blade is fixedly mounted on the surface of the rotating rod.

[0021] Preferably, a one-way bearing four is fixedly installed on the surface of the rotating rod, two connecting rods two are fixedly installed on the surface of the one-way bearing four, one end of the two connecting rods two are respectively fixedly connected to the inner wall of the rotating tube, and the surface of the rotating tube is fixedly connected to multiple bulk material pipes.

[0022] Preferably, the pressing assembly includes an intermittent gear fixedly connected to the surface of the rotating rod, the inner bottom wall of the shell is rotatably connected to a gear plate via a rotating shaft, a plurality of pressing molds are installed on the upper surface of the gear plate, an annular plate is fixedly connected to the surface of the shell, a hydraulic cylinder is fixedly installed on the lower surface of the annular plate, and a pressing head is fixedly installed on the output end of the hydraulic cylinder.

[0023] Preferably, the lower surface of the lower hopper is fixedly connected to a discharge pipe, a solenoid valve is fixedly installed on the surface of the discharge pipe, a rotating hole is opened through the surface of the discharge pipe, the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod, a motor is fixedly installed on the inner bottom wall of the shell, the output end of the motor is fixedly connected to the bottom end of the rotating rod, and a controller is provided on the surface of the shell.

[0024] Compared with the prior art, the present invention has the following significant advantages:

[0025] First, the present invention can drive the rotation of the two feed pipes by cooperating with the one-way bearing through the rotating rod, thereby increasing the feed area and improving the screening effect. The large impurities after screening will fall into the two arc-shaped collecting boxes along the inclined surface of the screening bucket, and the screened metal powder can directly reach the cavity formed by the lower mixing bucket and the upper mixing bucket through the feeding annular notch to be mixed, thereby avoiding the problem that the metal powder after screening will agglomerate due to its fine particle size when it is fed into the mixing equipment separately, thereby affecting the mixing effect.

[0026] Second, the present invention drives the auger blade inside the feeding tube to uniformly discharge the micro wax powder, lithium stearate, green body enhancer and flow rate agent inside the storage bucket through the rotating rod. At the same time, the rotating rod drives the one-way bearing 4 to realize the rotation of the rotating tube. The rotation of the rotating tube can rotate and scatter a part of the additives through the bulk material tube, so as to realize the pre-mixing of metal powder and additives, thereby improving the mixing effect with the screened metal powder.

[0027] Thirdly, the present invention can drive the rotation of the trapezoidal plate and the trapezoidal groove plate through the rotating rod through the one-way bearing 2 and the one-way bearing 3, thereby driving the synchronous rotation of the lower mixing bucket and the upper mixing bucket. When the lower mixing bucket and the upper mixing bucket rotate synchronously, the metal powder inside can be rotated and mixed. At the same time, the slider on the trapezoidal groove plate will slide on the spring rod when subjected to the change of the rotating centrifugal force, thereby realizing the swing of the rotating drum and the arc blades on the trapezoidal plate, thereby improving the mixing effect.

[0028] Fourthly, the present invention drives the rotating plate to rotate through the one-way bearing five, and the rotation of the rotating plate will drive the multiple resistance blocks arranged on it to reciprocately resist the extrusion block, so that the piston rod arranged on the extrusion block can slide back and forth under the action of the compression spring arranged inside the cylinder, so that the external spindle oil additive can be sucked into the cylinder through the U-shaped suction tube and the connecting tube, and then introduced into the fixed semi-arc tube through the liquid outlet tube, and then introduced into the circular tube through the rotating semi-arc tube, and then introduced from the circular tube into the rotating drum through the rotating joint, and then sprayed out through the through hole and the arc hole, so as to improve the mixing uniformity of the spindle oil additive and the metal powder. While spraying, the arc blades can be driven to rotate to further improve the mixing uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 It is a schematic diagram of the overall three-dimensional structure provided by the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the housing provided by the present invention;

[0032] Figure 3 It is a schematic diagram of the cutaway structure of the premixing assembly provided by the present invention;

[0033] Figure 4 It is a schematic diagram of the cutaway structure of the screening and mixing assembly provided by the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the hybrid auxiliary unit provided by the present invention;

[0035] Figure 6 It is a schematic diagram of the exploded cross-section structure of the fixed half-arc tube and the rotating half-arc tube provided by the present invention;

[0036] Figure 7 The present invention provides Figure 4 The enlarged structural diagram at A in the middle;

[0037] Figure 8 The present invention provides Figure 5 The enlarged structural diagram at B in the middle;

[0038] Fig. 9 It is a schematic diagram of the structure of the feeding unit provided by the present invention;

[0039] Fig.10 The present invention provides Fig. 9 The enlarged structural diagram at C in the middle;

[0040] Fig.11 It is a schematic diagram of the structure of the pressing assembly provided by the present invention.

[0041] Description of reference numerals:

[0042] 1. Shell; 2. Controller; 3. Rotating rod; 4. Three-way adapter; 5. Feeding pipe; 6. Storage bucket; 7. Right-angle rod; 8. Screening bucket; 9. Arc groove; 10. Arc collecting box; 11. Annular plate; 12. Motor; 13. Magnetic block; 14. One-way bearing 1; 15. Connecting rod 1; 16. Auger blade; 17. One-way bearing 2; 18. One-way bearing 3; 19. Trapezoidal plate; 20. Trapezoidal groove plate; 21. Lower mixing bucket; 22. Upper mixing bucket; 23. Feeding annular notch; 24. Fixed semi-arc tube; 25. Rotating semi-arc tube; 26. Spring rod; 27. Sliding block; 28. Telescopic rod; 29. ​​Rotating drum; 30. Through hole; 31. Arc blade; 32. Arc hole; 33. Liquid inlet pipe; 34. Rotating joint; 35. Round pipe; 36. One-way valve 1; 37. Hose; 38. Feed pipe; 39. Rotating block; 40. Rotating pipe; 41. One-way bearing 4; 42. Connecting rod 2; 43. Bulk pipe; 44. Feed hopper; 45. Discharge pipe; 46. One-way bearing 5; 47. Rotating plate; 48. Resistance block; 49. Rotating ring; 50. Fixed hoop; 51. Cylinder; 52. Compression spring; 53. Liquid outlet pipe; 54. U-shaped liquid suction pipe; 55. One-way valve 2; 56. Fixed rod; 57. Piston rod; 58. Extrusion block; 59. Connecting pipe; 60. Hydraulic cylinder; 61. Intermittent gear; 62. Gear plate; 63. Pressing die; 64. Pressing head. DETAILED DESCRIPTION

[0043] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention provides a compressor balance block production process using low-cost high manganese steel through improvement. The technical solution of the present invention is:

[0045] like Figure 1-Figure 11 As shown, a compressor balancing block production process using low-cost high manganese steel includes the following steps:

[0046] Step 1, using 10%-25% of ferromanganese, 20% of scrap iron, 30%-40% of steel bar heads, 10%-30% of manganese steel scrap, 0%-15% of copper wire and 3%-4% of ferrosilicon as raw materials and smelting in the order of melting point from high to low;

[0047] Step 2: atomize the smelted solution, and then centrifuge to dehydrate it at a centrifugal speed of 550 r / min to obtain a dry powder in an irregular particle shape; and then dry the dehydrated metal alloy powder at a temperature of 200-400° C. for 2-2.5 hours;

[0048] Step 3: Add the dried powder into the processing equipment for screening and mixing; add micro wax powder, lithium stearate, green body enhancer, flow rate agent, sintering activator and spindle oil additives during the mixing process, the additives account for 2%-5% of the total weight of the stainless steel powder, and after uniform mixing, the chemical content is: Mn 13%-25%, Cu 0%-15%, Cr 0%-1%, Ni 0%-1%, P 0%-2%, Si 0%-2%, C 0.5%-2%, and the balance is iron, and the compressor balance block green body with a density of 6.0-6.5g / cm³ is obtained by pressing and molding;

[0049] Step 4: sintering the compressor balancing block green body at a sintering temperature of 1050-1300° C. for 30-60 minutes, and then subjecting the sintered compressor balancing block green body to a shot blasting treatment to obtain a compressor balancing block;

[0050] The processing equipment in step 3 includes a housing 1, the inner bottom wall of the housing 1 is rotatably connected to a rotating rod 3, and the interior of the housing 1 is respectively provided with a screening and mixing component, a pre-mixing component and a pressing component, and the screening and mixing component includes a screening unit, a mixing auxiliary unit and a mixing and feeding unit;

[0051] The mixing auxiliary unit includes a one-way bearing 2 17 and a one-way bearing 3 18 respectively fixedly mounted on the surface of the rotating rod 3, and a plurality of trapezoidal plates 19 and a trapezoidal groove plate 20 are respectively fixedly mounted on the surfaces of the one-way bearing 2 17 and the one-way bearing 3 18. The one-way bearing 2 17 and the one-way bearing 3 18 can drive the motor 12 to move when the motor 12 is reversed. One ends of the plurality of trapezoidal plates 19 and the trapezoidal groove plate 20 are respectively fixedly connected with a lower mixing bucket 21 and an upper mixing bucket 22, and the upper mixing bucket 22 and the lower mixing bucket 21 are both funnel-shaped;

[0052] The screening unit comprises a screening bucket 8 arranged above the upper mixing bucket 22 . The screening bucket 8 is also arranged in a funnel shape, and there is a certain pre-mixing space between the screening bucket 8 and the upper mixing bucket 22 .

[0053] like Figure 5 and Figure 8As shown, the mixing auxiliary unit also includes a circular tube 35 rotatably connected to the upper surface of the plurality of trapezoidal plates 19, the top ends of the plurality of circular tubes 35 are all rotatably provided with a rotating drum 29, the interior of the rotating drum 29 is provided with a cavity for the spindle oil additive to pass through, the surfaces of the plurality of rotating drums 29 are all fixedly installed with arc blades 31, four arc blades 31 are provided on one rotating drum 29, the plurality of arc blades 31 and the inner walls of the plurality of rotating drums 29 are respectively penetrated with arc holes 32 and through holes 30, the arc holes 32 and the through holes 30 are connected by a design so that the spindle oil additive can pass through the interior of the rotating drum 29 and then spray out through the arc holes 32 provided on the arc blades 31, four groups of arc holes 32 are provided on one arc blade 31, which can improve the mixing effect, the inner walls of the plurality of rotating drums 29 are all rotatably connected with telescopic rods 28, the setting of the telescopic rods 28 can provide motion compensation for the rotating drum 29 to drive the arc blades 31 to swing due to changes in centrifugal force, and the top ends of the plurality of telescopic rods 28 are all rotatably connected with sliders 2 7, multiple sliders 27 are slidably arranged on the inner walls of the corresponding multiple trapezoidal groove plates 20, and the top of the circular tube 35 is fixedly connected with a rotating joint 34. The setting of the rotating joint 34 can realize the rotation setting of the circular tube 35 and the liquid inlet pipe 33, and will not cause motion interference to the rotation of the rotating drum 29. The surfaces of the multiple circular tubes 35 are fixedly installed with a one-way valve 36, and the one-way valve 36 is a prior art. The tops of the multiple rotating joints 34 are fixedly connected with the liquid inlet pipe 33, and the tops of the multiple liquid inlet pipes 33 are fixedly connected. They are respectively fixedly connected to the bottom ends of the corresponding multiple rotating drums 29, the inner walls of the multiple trapezoidal groove plates 20 are fixedly connected with spring rods 26, the spring rod 26 is composed of a bare rod and a spring, the spring is sleeved on the surface of the bare rod, one side of the multiple sliders 27 is provided with sliding holes, the inner walls of the multiple sliding holes are respectively slidably connected to the surfaces of the corresponding multiple spring rods 26, the sliding holes opened on the sliders 27 are slidably connected to the surfaces of the bare rods in the spring rods 26, and a feeding annular notch 23 is formed between the lower mixing bucket 21 and the upper mixing bucket 22.

[0054] like Figure 2 and Figure 3 As shown, the screening unit also includes two arc-shaped collecting boxes 10, the inner walls of the two arc-shaped collecting boxes 10 are fitted with the surface of the screening bucket 8, and magnetic blocks 13 are fixedly installed at both ends of one of the arc-shaped collecting boxes 10. The two arc-shaped collecting boxes 10 are made of metal material and can be connected to the other arc-shaped collecting box 10 through the magnetic block 13 set at the end of one of the arc-shaped collecting boxes 10, so as to improve the stability in the process of collecting impurities. The two ends of one of the arc-shaped collecting boxes 10 are magnetically connected to the two ends of the other arc-shaped collecting box 10 through the magnetic block 13, and two arc-shaped grooves 9 are provided on the surface of the shell 1, and the surfaces of the two arc-shaped collecting boxes 10 are respectively adapted and slidably connected to the inner walls of the corresponding two arc-shaped grooves 9.

[0055] like Fig. 9 and Fig.10As shown, the mixing and feeding unit includes a one-way bearing 5 46 fixedly mounted on the surface of the rotating rod 3, a rotating plate 47 is fixedly mounted on the surface of the one-way bearing 5 46, a plurality of abutment blocks 48 are fixedly connected to the upper surface of the rotating plate 47, and the abutment blocks 48 are equidistantly distributed in a circular array on the upper surface of the rotating plate 47, a rotating ring 49 is rotatably connected to the surface of the rotating rod 3, and the rotating ring 49 is rotatably connected to the rotating rod 3, so that the rotating ring 49 will not rotate due to the rotation of the rotating rod 3, and two fixing hoops 50 are fixedly connected to the surface of the rotating ring 49, and the fixing hoop 50 is composed of a cross bar and a circular ring, and the cross bar can connect the circular ring with the rotating rod 3 The moving ring 49 is fixedly connected, the inner walls of the two fixing hoops 50 are fixedly connected with the cylinder 51, the inner top walls of the two cylinders 51 are fixedly connected with the compression springs 52, and the setting of the compression springs 52 can realize the automatic reset of the piston rod 57 after being resisted, thereby forming a reciprocating liquid suction effect, the inner walls of the two cylinders 51 are slidably connected with the piston rod 57, the piston rod 57 is T-shaped, and the surface at the outermost edge fits with the inner wall of the cylinder 51 to improve the air tightness, the top ends of the two piston rods 57 are respectively fixedly connected to the bottom ends of the corresponding two compression springs 52, and the bottom ends of the two piston rods 57 are fixedly connected with extrusion blocks 58.

[0056] The upper surfaces of the two cylinders 51 are fixedly connected with a liquid outlet pipe 53, and the upper surfaces of the two cylinders 51 are fixedly connected with the same U-shaped liquid suction pipe 54. The surface of the U-shaped liquid suction pipe 54 is fixedly connected with a connecting pipe 59, and the connecting pipe 59 can be connected to a storage container of an external spindle oil additive. One end of the connecting pipe 59 passes through the surface of the shell 1. Two one-way valves 2 55 are fixedly installed on the surface of the U-shaped liquid suction pipe 54. The one-way valve 2 55 and the one-way valve 1 36 have the same use effect and principle here, and are prior art.

[0057] The surfaces of the two fixing hoops 50 are fixedly connected with fixing rods 56, the top ends of the two fixing rods 56 are fixedly connected with the same lower hopper 44, the upper surface of the lower hopper 44 is fixedly connected with a fixed semi-arc tube 24, the upper surface of the fixed semi-arc tube 24 is rotatably connected with a rotating semi-arc tube 25, and by setting the fixed semi-arc tube 24 and the rotating semi-arc tube 25, when the trapezoidal plate 19 and the trapezoidal groove plate 20 drive the upper mixing bucket 22 and the lower mixing bucket 21 to rotate, the rotating semi-arc tube 25 can rotate synchronously to avoid the entanglement of the hose 37, the top ends of the two liquid outlet pipes 53 are respectively fixedly connected to the surface of the fixed semi-arc tube 24, the surface of the rotating semi-arc tube 25 is fixedly connected with multiple hoses 37, and the top ends of the multiple hoses 37 are respectively fixedly connected to the surfaces of the corresponding multiple circular tubes 35.

[0058] like Figure 3 and Figure 4As shown, the premixing assembly includes a one-way bearing 14 fixedly mounted on the surface of the rotating rod 3, two connecting rods 15 are fixedly mounted on the surface of the one-way bearing 14, one end of each of the two connecting rods 15 is fixedly connected to a feed pipe 5, the top of the rotating rod 3 is fixedly connected to a three-way adapter 4, the top connection of the three-way adapter 4 adopts a rotatable rotating head, so as to adapt to the two feed pipes 5 for rotating feeding to avoid motion interference during feeding, the two ends of the three-way adapter 4 are respectively fixedly connected to one end of the corresponding two feed pipes 5, the surface of the rotating rod 3 is rotatably connected to a storage bucket 6, and an addition pipe (attached) is arranged on the upper surface of the storage bucket 6. Figure 3 As can be seen in the figure), the addition of powder additives can be achieved. The bottom end of the storage bucket 6 is fixedly connected with a feed pipe 38, and the lower surface of the feed pipe 38 is fixedly connected with a rotating block 39, and the lower surface of the rotating block 39 is rotatably connected with a rotating tube 40. The surface of the feed pipe 38 is fixedly connected with a plurality of right-angle rods 7, and one end of the plurality of right-angle rods 7 is respectively fixedly connected to the surface of the screening bucket 8. The inner wall of the feed pipe 38 is provided with an auger blade 16. The auger blade 16 can improve the uniformity of the powder additive feeding, thereby improving the premixing effect. The auger blade 16 is fixedly mounted on the surface of the rotating rod 3.

[0059] A one-way bearing four 41 is fixedly installed on the surface of the rotating rod 3, and two connecting rods two 42 are fixedly installed on the surface of the one-way bearing four 41. One ends of the two connecting rods two 42 are respectively fixedly connected to the inner wall of the rotating tube 40. The surface of the rotating tube 40 is fixedly connected with multiple bulk material pipes 43. The bulk material pipes 43 are set to increase the feeding range of the powder additive during the feeding process, thereby further improving the mixing effect with the screened metal powder.

[0060] like Figure 2 and Fig.11 As shown, the pressing assembly includes an intermittent gear 61 fixedly connected to the surface of the rotating rod 3, the inner bottom wall of the shell 1 is rotatably connected to a gear plate 62 through a rotating shaft, a plurality of pressing molds 63 are installed on the upper surface of the gear plate 62, an annular plate 11 is fixedly connected to the surface of the shell 1, a hydraulic cylinder 60 is fixedly installed on the lower surface of the annular plate 11, and a pressing head 64 is fixedly installed on the output end of the hydraulic cylinder 60.

[0061] The lower surface of the lower hopper 44 is fixedly connected to a discharge pipe 45, and a solenoid valve is fixedly installed on the surface of the discharge pipe 45. The solenoid valve is a prior art, and is a valve that uses electromagnetic force to control the flow of fluid. A rotating hole is opened through the surface of the discharge pipe 45, and the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod 3. A motor 12 is fixedly installed on the inner bottom wall of the shell 1, and the output end of the motor 12 is fixedly connected to the bottom end of the rotating rod 3. A controller 2 is provided on the surface of the shell 1.

[0062] The specific working method is: start the motor 12 to make the motor 12 rotate forward, drive the rotation of the rotating rod 3, and then send the dried metal powder into the upper surface of the screening bucket 8 through the cooperation of the three-way adapter 4 and the two feeding pipes 5 for screening. The rotating rod 3 can drive the rotation of the two feeding pipes 5 through the one-way bearing 14, thereby increasing the feeding area and improving the screening effect. The large impurities after screening will fall into the two arc-shaped collection boxes 10 along the inclined surface of the screening bucket 8;

[0063] While screening, the rotating rod 3 drives the auger blade 16 inside the feeding tube 38 to evenly discharge the micro wax powder, lithium stearate, green body enhancer and flow rate agent inside the storage bucket 6. At the same time, the rotating rod 3 drives the one-way bearing 41 to realize the rotation of the rotating tube 40. The rotation of the rotating tube 40 can rotate and scatter a part of the additives through the bulk tube 43 to achieve pre-mixing of metal powder and additives, thereby improving the mixing effect with the screened metal powder. The pre-mixed metal powder will reach the cavity formed by the lower mixing bucket 21 and the upper mixing bucket 22 through the feeding annular notch 23;

[0064] After screening and premixing are completed, the additives in the storage bucket 6 are emptied, and the metal powder stops feeding. At this time, the motor 12 reverses, and the rotating rod 3 can drive the rotation of the trapezoidal plate 19 and the trapezoidal groove plate 20 through the one-way bearing 2 17 and the one-way bearing 3 18, respectively, thereby driving the synchronous rotation of the lower mixing bucket 21 and the upper mixing bucket 22. When the lower mixing bucket 21 and the upper mixing bucket 22 rotate synchronously, the metal powder inside can be rotated and mixed. At the same time, the slider 27 on the trapezoidal groove plate 20 will slide on the spring rod 26 when subjected to the change of the rotating centrifugal force, so that the rotating drum 29 and the arc blade 31 can be swung on the trapezoidal plate 19 to improve the mixing effect. When the rotating rod 3 drives the one-way bearing 2 17 and the one-way bearing 3 18 to move, the one-way bearing 5 46 moves synchronously. The one-way bearing 546 drives the rotating plate 47 to rotate, and the rotation of the rotating plate 47 drives the multiple abutment blocks 48 arranged thereon to abut against the extrusion block 58 reciprocatingly, so that the piston rod 57 arranged on the extrusion block 58 can slide back and forth under the action of the compression spring 52 arranged inside the cylinder 51, so that the external spindle oil additive can be sucked into the cylinder 51 through the U-shaped suction pipe 54 and the connecting pipe 59, and then introduced into the fixed semi-arc pipe 24 through the liquid outlet pipe 53, and then introduced into the circular pipe 35 through the rotating semi-arc pipe 25, and then introduced from the circular pipe 35 through the rotating joint 34 into the rotating drum 29, and then sprayed out through the through hole 30 and the arc hole 32, so as to improve the mixing uniformity of the spindle oil additive and the metal powder. While spraying, the arc blade 31 can be driven to rotate, so as to further improve the mixing uniformity.

[0065] After being evenly mixed, the motor 12 rotates forward again to stop adding the spindle oil additive. At this time, intermittent discharging can be achieved through the cooperation of the discharge pipe 45 and the solenoid valve. The rotating rod 3 drives the intermittent gear 61 to drive the gear plate 62 to rotate intermittently, which can cooperate with the switch of the solenoid valve to accurately introduce the mixed metal powder into the pressing mold 63, and then press and form it through the set hydraulic cylinder 60 and pressing head 64.

[0066] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A production process for compressor balancing blocks using low-cost high manganese steel, characterized in that: The following steps are involved: Step 1, using 10%-25% of ferromanganese, 20% of scrap iron, 30%-40% of steel bar heads, 10%-30% of manganese steel scrap, 0%-15% of copper wire and 3%-4% of ferrosilicon as raw materials and smelting in the order of melting point from high to low; Step 2: atomize the smelted solution, and then centrifuge to dehydrate it at a centrifugal speed of 550 r / min to obtain a dry powder in an irregular particle shape; and then dry the dehydrated metal alloy powder at a temperature of 200-400° C. for 2-2.5 hours; Step 3: Add the dried powder into the processing equipment for screening and mixing; add micro wax powder, lithium stearate, green body enhancer, flow rate agent, sintering activator and spindle oil additives during the mixing process, the additives account for 2%-5% of the total weight of the stainless steel powder, and after uniform mixing, the chemical content is: Mn 13%-25%, Cu 0%-15%, Cr 0%-1%, Ni 0%-1%, P 0%-2%, Si 0%-2%, C 0.5%-2%, and the balance is iron, and the compressor balance block green body with a density of 6.0-6.5g / cm³ is obtained by pressing and molding; Step 4: sintering the compressor balancing block green body at a sintering temperature of 1050-1300° C. for 30-60 minutes, and then subjecting the sintered compressor balancing block green body to a shot blasting treatment to obtain a compressor balancing block; The processing equipment in step 3 comprises a housing (1), the inner bottom wall of the housing (1) is rotatably connected to a rotating rod (3), a screening and mixing assembly, a pre-mixing assembly and a pressing assembly are respectively arranged inside the housing (1), and the screening and mixing assembly comprises a screening unit, a mixing auxiliary unit and a mixing and feeding unit; The mixing auxiliary unit comprises a second one-way bearing (17) and a third one-way bearing (18) respectively fixedly mounted on the surface of the rotating rod (3); a plurality of trapezoidal plates (19) and trapezoidal groove plates (20) are respectively fixedly mounted on the surfaces of the second one-way bearing (17) and the third one-way bearing (18); one end of the plurality of trapezoidal plates (19) and the trapezoidal groove plates (20) are respectively fixedly connected to a lower mixing bucket (21) and an upper mixing bucket (22); The screening unit comprises a screening bucket (8) arranged above the upper mixing bucket (22); The mixing auxiliary unit further comprises a circular tube (35) rotatably connected to the upper surfaces of the plurality of trapezoidal plates (19); a rotating drum (29) is rotatably provided at the top ends of the plurality of circular tubes (35); arc-shaped blades (31) are fixedly installed on the surfaces of the plurality of rotating drums (29); arc-shaped holes (32) and through holes (30) are respectively penetrated through the inner walls of the plurality of arc-shaped blades (31) and the plurality of rotating drums (29); a telescopic rod (28) is rotatably connected to the inner walls of the plurality of rotating drums (29); a slider (27) is rotatably connected to the top ends of the plurality of telescopic rods (28); the sliders (27) are respectively slidably provided on the inner walls of the corresponding plurality of trapezoidal groove plates (20); the circular tube ( The top of the plurality of circular tubes (35) is fixedly connected to a rotating joint (34), the surfaces of the plurality of circular tubes (35) are fixedly mounted with one-way valves (36), the tops of the plurality of rotating joints (34) are fixedly connected to a liquid inlet pipe (33), the tops of the plurality of liquid inlet pipes (33) are respectively fixedly connected to the bottom ends of the corresponding plurality of rotating drums (29), the inner walls of the plurality of trapezoidal groove plates (20) are fixedly connected to spring rods (26), one side of the plurality of sliding blocks (27) is provided with sliding holes, the inner walls of the plurality of sliding holes are respectively slidably connected to the surfaces of the corresponding plurality of spring rods (26), and a feeding annular notch (23) is formed between the lower mixing bucket (21) and the upper mixing bucket (22).

2. The production process of a compressor balance block using low-cost high manganese steel according to claim 1 is characterized in that: The screening unit further comprises two arc-shaped collection boxes (10), the inner walls of the two arc-shaped collection boxes (10) being in contact with the surface of the screening bucket (8), the two ends of one of the arc-shaped collection boxes (10) being fixedly mounted with magnetic blocks (13), the two ends of one of the arc-shaped collection boxes (10) being magnetically connected to the two ends of the other arc-shaped collection box (10) via the magnetic blocks (13), the surface of the shell (1) being provided with two arc-shaped grooves (9), the surfaces of the two arc-shaped collection boxes (10) being respectively adapted and slidably connected to the inner walls of the corresponding two arc-shaped grooves (9).

3. The production process of a compressor balancing block using low-cost high manganese steel according to claim 2 is characterized in that: The mixing and feeding unit comprises a one-way bearing five (46) fixedly mounted on the surface of the rotating rod (3); a rotating plate (47) is fixedly mounted on the surface of the one-way bearing five (46); a plurality of abutment blocks (48) are fixedly connected to the upper surface of the rotating plate (47); a rotating ring (49) is rotatably connected to the surface of the rotating rod (3); two fixing hoops (50) are fixedly connected to the surface of the rotating ring (49); the inner walls of the two fixing hoops (50) are fixedly connected to cylinders (51); the inner top walls of the two cylinders (51) are fixedly connected to compression springs (52); the inner walls of the two cylinders (51) are slidably connected to piston rods (57); the top ends of the two piston rods (57) are respectively fixedly connected to the bottom ends of the corresponding two compression springs (52); and the bottom ends of the two piston rods (57) are fixedly connected to extrusion blocks (58).

4. The production process of a compressor balancing block using low-cost high manganese steel according to claim 3 is characterized in that: The upper surfaces of the two cylinders (51) are fixedly connected to a liquid outlet pipe (53), the upper surfaces of the two cylinders (51) are fixedly connected to a same U-shaped liquid suction pipe (54), the surface of the U-shaped liquid suction pipe (54) is fixedly connected to a connecting pipe (59), one end of the connecting pipe (59) passes through the surface of the shell (1), and two one-way valves (55) are fixedly installed on the surface of the U-shaped liquid suction pipe (54).

5. The production process of a compressor balancing block using low-cost high manganese steel according to claim 4 is characterized in that: The surfaces of the two fixing hoops (50) are fixedly connected to fixing rods (56), the top ends of the two fixing rods (56) are fixedly connected to the same lower hopper (44), the upper surface of the lower hopper (44) is fixedly connected to a fixed semi-arc tube (24), the upper surface of the fixed semi-arc tube (24) is rotatably connected to a rotating semi-arc tube (25), the top ends of the two liquid outlet pipes (53) are respectively fixedly connected to the surfaces of the fixed semi-arc tube (24), the surface of the rotating semi-arc tube (25) is fixedly connected to a plurality of hoses (37), and the top ends of the plurality of hoses (37) are respectively fixedly connected to the surfaces of the corresponding plurality of circular tubes (35).

6. The production process of compressor balancing block using low-cost high manganese steel according to claim 1, characterized in that: The premixing assembly comprises a one-way bearing (14) fixedly mounted on the surface of a rotating rod (3); two connecting rods (15) are fixedly mounted on the surface of the one-way bearing (14); one end of each of the two connecting rods (15) is fixedly connected to a feed pipe (5); the top end of the rotating rod (3) is fixedly connected to a three-way adapter (4); the two ends of the three-way adapter (4) are respectively fixedly connected to one end of the corresponding two feed pipes (5); the surface of the rotating rod (3) is rotatably connected to a storage bucket (6); The bottom end of the storage bucket (6) is fixedly connected to a feed pipe (38), the lower surface of the feed pipe (38) is fixedly connected to a rotating block (39), the lower surface of the rotating block (39) is rotatably connected to a rotating tube (40), the surface of the feed pipe (38) is fixedly connected to a plurality of right-angle rods (7), one end of each of the plurality of right-angle rods (7) is fixedly connected to the surface of the screening bucket (8), the inner wall of the feed pipe (38) is provided with an auger blade (16), and the auger blade (16) is fixedly mounted on the surface of the rotating rod (3).

7. The production process of a compressor balancing block using low-cost high manganese steel according to claim 6 is characterized in that: A one-way bearing four (41) is fixedly mounted on the surface of the rotating rod (3), two connecting rods two (42) are fixedly mounted on the surface of the one-way bearing four (41), one end of the two connecting rods two (42) are respectively fixedly connected to the inner wall of the rotating tube (40), and a plurality of bulk material pipes (43) are fixedly connected to the surface of the rotating tube (40).

8. The production process of compressor balancing block using low-cost high manganese steel according to claim 1, characterized in that: The pressing assembly comprises an intermittent gear (61) fixedly connected to the surface of the rotating rod (3); the inner bottom wall of the housing (1) is rotatably connected to a gear plate (62) via a rotating shaft; a plurality of pressing dies (63) are mounted on the upper surface of the gear plate (62); an annular plate (11) is fixedly connected to the surface of the housing (1); a hydraulic cylinder (60) is fixedly mounted on the lower surface of the annular plate (11); and a pressing head (64) is fixedly mounted on the output end of the hydraulic cylinder (60).

9. The production process of a compressor balancing block using low-cost high manganese steel according to claim 5, characterized in that: The lower surface of the lower hopper (44) is fixedly connected to a discharge pipe (45), a solenoid valve is fixedly installed on the surface of the discharge pipe (45), a rotating hole is penetrated through the surface of the discharge pipe (45), the inner wall of the rotating hole is rotatably connected to the surface of the rotating rod (3), a motor (12) is fixedly installed on the inner bottom wall of the shell (1), the output end of the motor (12) is fixedly connected to the bottom end of the rotating rod (3), and a controller (2) is arranged on the surface of the shell (1).

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