A processing technology for special steel alloy plate

Abstract

The invention discloses a processing technology for a special steel alloy plate, and relates to the technical field of alloy plate processing. Raw materials are selected according to weight percentage: C is greater than or equal to 0.67% and less than 0.75%, 16.3-17.2% Cr, 1.25-2.35% W, 0.26-0.33% Al, 0.13-0.015% B, and the remainder is Ni and inevitable impurities. The invention starts a driving motor, drives two rotating shafts to rotate through gears and chains, and the rotating shaft drives a stirring plate 1 sliding connection sliding connection and a stirring plate 2 sliding connection sliding connection to rotate for stirring and mixing. At the same time, through the setting of the stirring plate 1 sliding connection sliding connection and the stirring plate 2 sliding connection sliding connection, it is convenient to scrape the inner wall thereof, so that the stirring effect is better. Finally, the driving shaft is started to rotate, and the arc-shaped sealing plate sliding connection sliding connection is driven to rotate for discharging.

Description

Technical Field

[0001] The invention relates to the technical field of alloy plate processing, and in particular to a processing technology for a special steel alloy plate. Background Art

[0002] High-strength special steel plates for protection need to have ultra-high strength and hardness, as well as good plasticity, toughness and crack-arresting properties to ensure that the steel plates do not collapse under the impact of projectiles and do not crack under the impact of multiple bullets, effectively reducing the impact force on the support behind the bulletproof steel plates. Statistics show that the annual demand for high-strength protective steel is more than 300,000 tons, and it is mainly used in aircraft maintenance hangars at defense and civil airports, shipbuilding, large industrial plants and workshops, and engineering machinery. Its role and status are very important. Existing alloy plates are prone to deformation and cracking under high temperature conditions. Summary of the invention

[0003] The purpose of the present invention is to provide a processing technology for special steel alloy plates to solve the following technical problems: existing alloy plates are prone to deformation and cracking under high temperature conditions.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A processing technology for a special steel alloy plate comprises the following steps:

[0006] Step 1, selecting raw materials according to weight percentage: C is greater than or equal to 0.67% and less than 0.75%, 16.3-17.2% Cr, 1.25-2.35% W, 0.26-0.33% Al, 0.13-0.015% B, 0.53-0.98% Co, 0.03-0.04% Zr, 0.05-0.07% Mo, 0.4-0.5% Re, Ti 0.010%-0.040%, 0.10-0.25% V, P≤0.012%, S≤0.006%, and the balance is Ni and unavoidable impurities;

[0007] Step 2: First, add the above-mentioned C, Cr, W, Mo and Ni metal materials into the feeding funnel of the forming device, and drive the storage box and the feeding funnel to rise through the slide rail, and add the materials into the mixing box; first, use low-power power transmission, the power is 20-30% of the rated power of the power supply, when the metal materials in the mixing box begin to melt, increase the power transmission to 80%-100% of the rated power and make the furnace charge completely melted, and then keep the vacuum degree below 1Pa, the refining temperature is 1525-1575℃, and the refining time is 15-30min;

[0008] Step 3: Then keep the vacuum degree below 1Pa, cool down to 1475-1500℃, then add Ti, Al, B, Zr, V and Re metal materials in sequence, then heat up to 1525-1575℃, keep warm for 4-6min; finally cool down to 1400-1450℃ for casting;

[0009] Step 4: Finally, the material is discharged through the unloading mechanism and cast to obtain a special steel alloy plate.

[0010] As a further solution of the present invention: the forming device includes a support seat, a mixing box is fixedly installed on the top of the support seat, a stirring mechanism is arranged inside one side of the mixing box, a feeding mechanism is arranged at the bottom center of the mixing box, a slide rail is obliquely arranged on the top of the support seat and on one side of the mixing box, a lower slide is fixedly installed on the slide rail, the lower slide is obliquely arranged and connected to the top of the mixing box, a material storage box is slidably connected to the slide rail, and a loading funnel is fixedly installed on the top of the material storage box.

[0011] As a further solution of the present invention: a support plate is fixedly installed in the middle of one side of the slide rail, a winding motor is fixedly installed on the top of the support plate, a winding disk is fixedly installed on the rear of the output shaft of the winding motor, and a wire wheel is fixedly installed on the top of the slide rail; a guide wheel is fixedly installed at the center of one side of the feeding funnel, a lower arc plate is arranged below the guide wheel, an upper arc plate is arranged above the guide wheel, arc-shaped grooves are opened on both sides of the upper arc plate, connecting shafts are horizontally installed on both sides of the guide wheel, a sliding wheel three is fixedly installed on the end of the connecting shaft, and the sliding wheel three is slidably connected to the inside of the slide rail.

[0012] As a further solution of the present invention: a cylinder is fixedly installed on one side of the material storage box, a push plate is fixedly installed on the piston rod of the cylinder, the push plate is slidably connected to the material storage box, sliding wheels 2 are fixedly installed on both sides of the material storage box, the sliding wheels 2 are slidably connected to the inside of the slide rail, and sliding wheels 1 are arranged below the sliding wheels 2, and the sliding wheels 1 are slidably connected to the surface of the slide rail.

[0013] As a further scheme of the present invention: the interior of the mixing box is divided into two circular cavities, the bottom between the two circular cavities is sealed by a feeding mechanism, a rotating shaft is horizontally arranged inside the circular cavity, and the rotating shaft is driven to rotate by a driving motor arranged on one side of the mixing box, an arc plate 1 is fixedly welded on the rotating shaft, and the arc plate 1 is connected to the arc plate stirring rod through a thread, and a stirring plate 1 is fixedly installed on the end of the arc plate stirring rod in the middle, and the stirring plate 1 is in contact with the middle inner wall of the circular cavity, and a stirring plate 2 is fixedly installed on the end of the arc plate stirring rod at both ends, and the stirring plate 2 is in contact with the inner walls at both ends of the circular cavity, and inclined surfaces are provided on both stirring plates 1 and 2.

[0014] As a further solution of the present invention: the material discharge mechanism includes a driving shaft rotatably mounted on the bottom of the mixing box, and both ends of the driving shaft are connected to the arc-shaped sealing plate through connecting rods.

[0015] As a further solution of the present invention: trapezoidal sealing strips are provided at both ends of the arc-shaped sealing plate, springs are symmetrically installed at the bottom of the mixing box, and arc-shaped sealing strips are fixedly installed at the ends of the springs.

[0016] Beneficial effects of the present invention:

[0017] The invention adds various raw materials to make the tensile strength Rm of the special steel alloy plate at 900°C above 730MPa, and preferably above 770MPa, the 0.2% plastic extension strength is up to 540MPa, the elongation after fracture is minimized to 19%, and the section shrinkage is minimized to 25%. The nickel-based high-temperature alloy of the invention has a maximum service life of 235h at 950°C and 300MPa strength, the elongation after fracture is minimized to 28%, and the section shrinkage is minimized to 44%.

[0018] The present invention makes one end of the wire on the winding disk pass around the guide wheel sliding connection, then enters from the left arc notch, passes around the guide wheel sliding connection, and goes out from the right arc notch to make a dead knot, then adds the raw material into the feeding funnel, starts the winding motor to drive the winding disk sliding connection to rotate, and then the winding wire is driven to drive the material funnel to rise, and when it reaches the top of the lower slide, starts the cylinder sliding connection to drive the push plate sliding connection to move, and the raw material in the feeding funnel flows into the mixing box through the lower slide for heating and mixing; the arrangement of this structure facilitates automatic feeding, and avoids manually sending the raw material to the top for unloading;

[0019] The present invention starts a driving motor, which drives two rotating shafts to rotate through gears and chains, and the rotating shaft drives stirring plate one sliding connection and stirring plate two sliding connection to rotate for stirring and mixing. At the same time, the arrangement of stirring plate one sliding connection and stirring plate two sliding connection facilitates scraping the inner wall, thereby achieving a better stirring effect. Finally, the driving shaft is started to rotate, which drives the arc-shaped sealing plate sliding connection to rotate for discharging. In the sealing process, when the arc-shaped sealing plate rotates, the spring sliding connection is squeezed by the arc-shaped sealing strip, thereby achieving sealing, and the two ends are in contact through the trapezoidal sealing strip to achieve sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention from a side view;

[0022] Figure 2 It is a structural schematic diagram of the present invention in a front view;

[0023] Figure 3 It is a schematic diagram of the test structure of the feeding funnel of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the mixing box of the present invention;

[0025] Figure 5 It is a front view structural schematic diagram of the blanking mechanism of the present invention.

[0026] In the figure: 1. support seat; 2. mixing box; 3. unloading mechanism; 4. slide rail; 5. storage box; 6. feeding funnel; 11. driving motor; 21. rotating shaft; 22. arc plate one; 23. arc plate stirring rod; 24. stirring plate one; 25. stirring plate two; 26. circular cavity; 27. spring; 28. arc sealing strip; 31. driving shaft; 32. arc sealing plate; 33. connecting rod; 34. trapezoidal sealing strip; 41. guide wheel; 42. supporting plate; 43. winding disk; 44. lower slide track; 45. winding motor; 51. sliding wheel one; 52. sliding wheel two; 53. cylinder; 54. pushing plate; 61. guide wheel; 62. lower arc plate; 63. arc notch; 64. upper arc plate; 65. connecting shaft; 66. sliding wheel three. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0028] Embodiment 1

[0029] The present invention is a processing technology for a special steel alloy plate, comprising the following steps:

[0030] Step 1: Select raw materials according to weight percentage: C greater than or equal to 0.67%, 17.2% Cr, 2.35% W, 0.33% Al, 0.015% B, 0.98% Co, 0.04% Zr, 0.07% Mo, 0.5% Re, 0.25% V, Ti 0.010%, P≤0.012%, S≤0.006%, and the balance is Ni and unavoidable impurities;

[0031] Step 2: First, add the above-mentioned C, Cr, W, Mo and Ni metal materials into the feeding funnel of the forming device, drive the storage box and the feeding funnel to rise through the slide rail, and add materials into the mixing box; first, use low-power power transmission, the power is 30% of the rated power of the power supply, when the metal materials in the mixing box begin to melt, increase the power transmission to 100% of the rated power and make the furnace charge completely melt, then keep the vacuum degree below 1Pa, the refining temperature is 1575℃, and the refining time is 15-30min;

[0032] Step 3: Then keep the vacuum degree below 1Pa, cool down to 1500℃, add Ti, Al, B, Zr, V and Re metal materials in sequence, then heat up to 1575℃, keep warm for 6min; finally cool down to 1450℃ for casting;

[0033] Step 4: Finally, the material is discharged through the unloading mechanism and cast to obtain a special steel alloy plate.

[0034] Embodiment 2

[0035] Step 1: Select raw materials according to weight percentage: C less than 0.75%, 16.3% Cr, 1.25% W, 0.26% Al, 0.13% B, 0.53% Co, 0.03% Zr, 0.05% Mo, 0.4% Re, 0.10% V, Ti0.040%, P≤0.012%, S≤0.006%, and the balance is Ni and unavoidable impurities;

[0036] Step 2: First, add the above-mentioned C, Cr, W, Mo and Ni metal materials into the feeding funnel of the forming device, and drive the storage box and the feeding funnel to rise through the slide rail, and add materials into the mixing box; first, use low-power power transmission, the power is 20% of the rated power of the power supply, when the metal materials in the mixing box begin to melt, increase the power transmission to 80% of the rated power and make the furnace charge completely melt, and then keep the vacuum degree below 1Pa, the refining temperature is 1525℃, and the refining time is 15min;

[0037] Step 3: Then keep the vacuum degree below 1Pa, cool down to 1475℃, add Ti, Al, B, Zr, V and Re metal materials in sequence, then heat up to 1525℃, keep warm for 4-6min; finally cool down to 1400℃ for casting;

[0038] Step 4: Finally, the material is discharged through the unloading mechanism and cast to obtain a special steel alloy plate.

[0039] Embodiment 3

[0040] See also Figure 1-5 As shown, the forming device includes a support base 1, a mixing box 2 is fixedly installed on the top of the support base 1, a heating element is arranged inside the mixing box 2 for heating, a stirring mechanism is arranged inside one side of the mixing box 2, a feeding mechanism 3 is arranged at the bottom center of the mixing box 2, a slide rail 4 is obliquely arranged on the top of the support base 1 and on one side of the mixing box 2, a lower slide track 44 is fixedly installed on the slide rail 4, the lower slide track 44 is inclined for easy discharge, and the top of the mixing box 2 is connected, and an upper sliding connection is provided on the slide rail 4, and a material storage box 5 is slidably connected, and a loading funnel 6 is fixedly installed on the top of the material storage box 5.

[0041] A support plate 42 is fixedly installed in the middle of one side of the slide rail 4, a winding motor 45 is fixedly installed on the top of the support plate 42, a winding disk 43 is fixedly installed on the rear of the output shaft of the winding motor 45, and a guide wheel 41 is fixedly installed on the top of the slide rail 4; a guide wheel 61 is fixedly installed in the center of one side of the feeding funnel 6, a lower arc plate 62 is arranged below the guide wheel 61, an upper arc plate 64 is arranged above the guide wheel 61, arc-shaped notches 63 are opened on both sides of the upper arc plate 64, connecting shafts 65 are horizontally installed on both sides of the guide wheel 61, and sliding wheels 3 66 are fixedly installed at the ends of the connecting shafts 65, and the sliding wheels 3 66 are connected to the inside of the slide rail 4 in a sliding manner. The feeding funnel is limited by sliding wheels 3 66 and 2 52 from the inside, and sliding wheels 1 51 from the outside to ensure the stability of its movement.

[0042] The material storage box 5 is a U-shaped hollow structure, which is adapted to the lower slide track 44. A cylinder 53 is fixedly installed on the side of the material storage box 5 away from the lower slide track 44. A push plate 54 is fixedly installed on the piston rod of the cylinder 53. The push plate 54 is slidably connected to the material storage box 5 and inserted into the feeding funnel 6. Sliding wheels 52 are fixedly installed on both sides of the material storage box 5. The sliding wheels 52 are slidably connected to the inside of the slide rail 4. A sliding wheel 51 is arranged below the sliding wheel 52, and the sliding wheel 51 is slidably connected to the surface of the slide rail 4.

[0043] The interior of the mixing box 2 is divided into two circular cavities 26, the bottom between the two circular cavities 26 is sealed by the unloading mechanism 3, a rotating shaft 21 is horizontally arranged inside the circular cavity 26, and the rotating shaft 21 is driven to rotate by a driving motor 11 arranged on one side of the mixing box 2, an arc plate 22 is fixedly welded on the rotating shaft 21, and the arc plate 22 is connected to the arc plate stirring rod 23 through a thread, and a stirring plate 24 is fixedly installed at the end of the arc plate stirring rod 23 in the middle, and the stirring plate 24 is in contact with the middle inner wall of the circular cavity 26, and a stirring plate 25 is fixedly installed at the end of the arc plate stirring rod 23 at both ends, and the stirring plate 25 is in contact with the inner walls of the two ends of the circular cavity 26, and inclined surfaces are arranged on the stirring plate 1 24 and the stirring plate 2 25.

[0044] The material discharge mechanism 3 comprises a driving shaft 31 rotatably mounted at the bottom of the mixing box 2 , and both ends of the driving shaft 31 are connected to an arc-shaped sealing plate 32 via a connecting rod 33 .

[0045] Trapezoidal sealing strips 34 are provided at both ends of the arc-shaped sealing plate 32, springs 27 are symmetrically installed at the bottom of the mixing box 2, guide columns are provided in the springs 27 to guide and support, arc-shaped sealing strips 28 are fixedly installed at the ends of the springs 27, and the arc-shaped sealing strips 28 cooperate with the arc-shaped sealing plate 32 to seal. The above-mentioned structure provides a good sealing effect.

[0046] The working principle of the present invention is as follows: one end of the wire on the winding disk 43 is passed around the guide wheel 41, then enters from the arc-shaped notch on the left, passes around the guide wheel 61, and exits from the arc-shaped notch on the right, and then the above-mentioned conveying is carried out in sequence. First, the raw material is added to the feeding funnel, and the winding motor is started to drive the winding disk 43 to rotate, and then the winding wire is wound, and then the material funnel is driven to rise. When it reaches the top of the lower slide, the cylinder 53 is started to drive the push plate 54 to move, and the raw material in the feeding funnel flows into the mixing box through the lower slide for heating and mixing. The arrangement of this structure facilitates automatic feeding and avoids manually sending the raw material to the top for unloading.

[0047] Then the driving motor is started, and the two rotating shafts are driven to rotate through gears and chains, and the rotating shaft drives the stirring plate 1 24 and the stirring plate 25 to rotate for stirring and mixing. At the same time, the setting of the stirring plate 1 24 and the stirring plate 25 facilitates the scraping of the inner wall to achieve a better stirring effect. Finally, the driving shaft is started to rotate, driving the arc sealing plate 32 to rotate for discharging. During the sealing process, when the arc sealing plate rotates, it will squeeze the spring 27 through the arc sealing strip, thereby achieving sealing, and the two ends are in contact through the trapezoidal sealing strip to achieve sealing.

[0048] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A processing technology for special steel alloy plate, characterized in that: The following steps are involved: Step 1, select raw materials according to weight percentage: C is greater than or equal to 0.67% and less than 0.75%, 16.3-17.2% Cr, 1.25-2.35% W, 0.26-0.33% Al, 0.13-0.015% B, 0.53-0.98% Co, 0.03-0.04% Zr, 0.05-0.07% Mo, 0.4-0.5% Re, Ti0.010%-0.040%, 0.10-0.25% V, P≤0.012%, S≤0.006%, the balance is Ni and unavoidable impurities; Step 2: First, add the above-mentioned C, Cr, W, Mo and Ni metal materials into the feeding funnel of the forming device, drive the storage box and the feeding funnel to rise through the slide rail, and add materials into the mixing box; first, use low-power power transmission, the power is 20-30% of the rated power of the power supply, when the metal materials in the mixing box begin to melt, increase the power transmission to 80%-100% of the rated power and make the furnace charge completely melted, then keep the vacuum degree below 1Pa, the refining temperature is 1525-1575℃, and the refining time is 15-30min; Step 3: Then keep the vacuum degree below 1Pa, cool down to 1475-1500℃, then add Ti, Al, B, Zr, V and Re metal materials in sequence, then heat up to 1525-1575℃, keep warm for 4-6min; finally cool down to 1400-1450℃ for casting; Step 4: Finally, the material is discharged through the unloading mechanism and cast to obtain a special steel alloy plate.

2. The processing technology of a special steel alloy plate according to claim 1 is characterized in that: The forming device comprises a support base (1), a mixing box (2) is fixedly mounted on the top of the support base (1), a stirring mechanism is arranged inside one side of the mixing box (2), a feeding mechanism (3) is arranged at the bottom center of the mixing box (2), a slide rail (4) is obliquely arranged on the top of the support base (1) and on one side of the mixing box (2), a lower slideway (44) is fixedly mounted on the slide rail (4), the lower slideway (44) is obliquely arranged and connected to the top of the mixing box (2), a material storage box (5) is slidably connected to the slide rail (4), and a feeding funnel (6) is fixedly mounted on the top of the material storage box (5).

3. The processing technology of a special steel alloy plate according to claim 2 is characterized in that: A support plate (42) is fixedly installed in the middle of one side of the slide rail (4), a winding motor (45) is fixedly installed on the top of the support plate (42), a winding disk (43) is fixedly installed on the rear of the output shaft of the winding motor (45), and a guide wheel (41) is fixedly installed on the top of the slide rail (4); a guide wheel (61) is fixedly installed at the center of one side of the loading funnel (6), a lower arc plate (62) is arranged below the guide wheel (61), an upper arc plate (64) is arranged above the guide wheel (61), arc-shaped notches (63) are opened on both sides of the upper arc plate (64), connecting shafts (65) are horizontally installed on both sides of the guide wheel (61), and a sliding wheel three (66) is fixedly installed at the end of the connecting shaft (65), and the sliding wheel three (66) is slidably connected to the inside of the slide rail (4).

4. The processing technology of a special steel alloy plate according to claim 2 is characterized in that: A cylinder (53) is fixedly mounted on one side of the material storage box (5), a push plate (54) is fixedly mounted on the piston rod of the cylinder (53), the push plate (54) is slidably connected to the material storage box (5), and two sliding wheels (52) are fixedly mounted on both sides of the material storage box (5), the sliding wheel (52) is slidably connected to the inside of the slide rail (4), and a sliding wheel (51) is arranged below the sliding wheel (52), and the sliding wheel (51) is slidably connected to the surface of the slide rail (4).

5. The processing technology of a special steel alloy plate according to claim 2 is characterized in that: The interior of the mixing box (2) is divided into two circular cavities (26), the bottom between the two circular cavities (26) is sealed by a feeding mechanism (3), the stirring mechanism comprises a rotating shaft (21) arranged horizontally inside the circular cavity (26), the rotating shaft (21) is driven to rotate by a driving motor (11) arranged on one side of the mixing box (2), an arc plate 1 (22) is fixedly welded on the rotating shaft (21), the arc plate 1 (22) is connected to the arc plate stirring rod (23) by a thread, a stirring plate 1 (24) is fixedly installed at the end of the arc plate stirring rod (23) in the middle, the stirring plate 1 (24) contacts the middle inner wall of the circular cavity (26), and a stirring plate 2 (25) is fixedly installed at the end of the arc plate stirring rod (23) at both ends, the stirring plate 2 (25) contacts the inner walls of both ends of the circular cavity (26), and both the stirring plate 1 (24) and the stirring plate 2 (25) are provided with inclined surfaces.

6. The processing technology of a special steel alloy plate according to claim 2 is characterized in that: The material discharge mechanism (3) comprises a drive shaft (31) rotatably mounted at the bottom of the mixing box (2), and both ends of the drive shaft (31) are connected to the arc-shaped sealing plate (32) via a connecting rod (33).

7. The processing technology of a special steel alloy plate according to claim 6 is characterized in that: Trapezoidal sealing strips (34) are provided at both ends of the arc-shaped sealing plate (32), springs (27) are symmetrically mounted on the bottom of the mixing box (2), and arc-shaped sealing strips (28) are fixedly mounted on the ends of the springs (27).

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