Chamber structure for soft foundation material plasma nitriding device

Abstract

The utility model discloses a chamber structure for a soft foundation material plasma nitriding device, which comprises a nitriding piece, a heating piece and a clamping piece, the nitriding piece comprises a nitriding cylinder, the top end of the nitriding cylinder is open, the clamping piece is assembled at the open end of the top of the nitriding cylinder, the clamping piece is used for clamping a soft foundation material to be nitrided, an air supply piece is assembled at the bottom end of the nitriding cylinder, and the air supply piece is used for supplying air to the nitriding cylinder. The gas supply part is used for guiding nitrogen into the nitriding barrel, the heating part comprises an oil barrel, the nitriding barrel is sleeved with the oil barrel, the two ends of the oil barrel are fixed to the outer wall of the nitriding barrel correspondingly, and a plurality of heating rods are vertically fixed to the interior of the oil barrel and connected in series through wires. And a wire for connecting the plurality of heating rods in series is electrically connected with an external power supply circuit. The utility model solves the problems that the nitriding rate of the surface of the soft foundation material is influenced as the cavity cannot be uniformly heated and the permeation of nitrogen elements on the surface of the soft foundation material cannot be accelerated when the surface of the existing soft foundation material is nitrided.

Description

Technical Field

[0001] The utility model relates to the technical field of soft base material surface strengthening, in particular to a chamber structure for a soft base material plasma nitriding device. Background Art

[0002] Soft base materials such as high-speed steel and stainless steel are widely used in industrial production due to their excellent physical and mechanical properties, such as corrosion resistance, good plasticity and smoothness. In order to improve the hardness and wear resistance of the stainless steel surface, the soft base material is subjected to a specific nitriding surface strengthening treatment, and then the surface is subjected to a hard film coating treatment.

[0003] The existing announcement number is CN208667829U, and the name is a nitriding mechanism, including a furnace body, a nitriding tube, a bracket and a sealing device. The sealing device adopts a four-layer sealing structure, which includes an inner clamp, a polytetrafluoroethylene pad, an O-ring, a square flange, a plugging plate flange and an asbestos pad. The nitriding tube flange is installed between the inner clamp and the plugging plate flange, and is fastened with hexagon socket bolts. The polytetrafluoroethylene pad is installed at the relative position of the grooves on both sides of the nitriding tube flange. The asbestos pad is installed between the furnace body end face flange and the plugging plate flange. The O-ring is installed in the groove between the plugging plate flange and the square flange. The square flange is connected to the ventilation pipe, which is safer and more reliable to use. By adopting a four-layer sealing structure, the sealing is very good, which effectively prevents the leakage of the mixed gas; in addition, the angle and distance between the nitriding tube and the steel strip can be adjusted by rotating the S-shaped nitriding tube, so as to achieve the process requirements by controlling the nitriding amount of the steel strip. It has good practical application value and promotion value.

[0004] However, when the surface of the soft base material is nitrided, there is a lack of a heating device in the cavity used for nitriding, which results in the inability to uniformly heat the cavity during nitriding of the soft base material surface, and the inability to accelerate the attachment of nitrogen elements to the surface of the soft base material, thus affecting the nitriding rate of the soft base material surface. Utility Model Content

[0005] The utility model aims to provide a chamber structure for a soft base material plasma nitriding device, aiming to improve the above-mentioned problems.

[0006] The utility model is achieved in this way:

[0007] A chamber structure for a soft-base material plasma nitriding device comprises a nitriding part, a heating part and a clamping part. The nitriding part comprises a nitriding cylinder, the top end of the nitriding cylinder is open, and the top open end of the nitriding cylinder is assembled with a clamping part, the clamping part is used to clamp the soft-base material to be nitrided, the bottom end of the nitriding cylinder is assembled with an air supply part, the air supply part is used to guide nitrogen into the interior of the nitriding cylinder, the heating part comprises an oil cylinder, the oil cylinder is sleeved on the outside of the nitriding cylinder, and the two ends of the oil cylinder are respectively fixed on the outer wall of the nitriding cylinder, a plurality of heating rods are vertically fixed inside the oil cylinder, and the plurality of heating rods are connected in series through wires, and the wires of the plurality of heating rods in series are electrically connected to an external power supply line, a heat preservation sleeve is sleeved and fixed on the outside of the oil cylinder, and a bracket is vertically fixed on the bottom of the nitriding cylinder.

[0008] Furthermore, the gas supply component includes a bottom plate, which is fixed to the bottom end of the nitriding cylinder, and an air guide pipe is fixed through the bottom plate, and the end of the air guide pipe is connected to the nitrogen supply pipeline.

[0009] Furthermore, an air supply pump is connected and assembled on the air guide pipe, and a spray rod is fixed through one end of the air guide pipe extending to the nitriding cylinder.

[0010] Furthermore, the clamping member includes a screw cover, and two sliding frames are fixed horizontally and symmetrically inside the screw cover, and slide plates are slidably assembled on the two sliding frames.

[0011] Furthermore, clamping columns are horizontally fixed to adjacent ends of the slide plates on the two slide frames, and springs are horizontally fixed to the two slide frames, and the other end of the spring is fixed to the slide plate.

[0012] Furthermore, an internal thread is provided on the inner circumferential surface of the nitriding cylinder, and the internal thread of the nitriding cylinder is assembled and connected with the screw cover.

[0013] Furthermore, the end of the oil cylinder is vertically connected and fixed with a filling cylinder, and a sealing plug is vertically inserted in the filling cylinder.

[0014] Compared with the prior art, the utility model has the following beneficial effects: during use, the soft base material is clamped and extruded by a clamping member, and then the clamping member is assembled at the end of the nitriding cylinder, and then the nitrogen is transmitted to the air guide pipe by a gas supply member, and the nitrogen is sprayed on the outer surface of the soft base material through the spray rod on the air guide pipe, and then the heat transfer oil is added through the filling cylinder on the oil cylinder, and the heating rod is powered, and the heating rod heats the heat transfer oil in the oil cylinder, so that when the surface of the soft base material is nitrided, the cavity can be evenly heated, the nitrogen element is accelerated to be attached to the surface of the soft base material, and the nitriding rate of the surface of the soft base material is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the nitrided part in the decomposed state in the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the gas supply component in the decomposed state in the embodiment of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the clamping member in the embodiment of the utility model in a disassembled state.

[0021] In the figure: 1. nitriding part; 11. nitriding cylinder; 111. internal thread; 12. bracket; 13. air supply part; 131. bottom plate; 132. air guide pipe; 133. spray rod; 134. air supply pump; 2. heating part; 21. oil cylinder; 211. filling cylinder; 22. heating rod; 23. insulation sleeve; 3. clamping part; 31. screw cover; 32. slide frame; 33. slide plate; 34. clamping column; 35. spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2, Figure 3 , Figure 4 and Figure 5 As shown, a chamber structure for a soft-base material plasma nitriding device includes a nitriding part 1, a heating part 2 and a clamping part 3. The nitriding part 1 includes a nitriding cylinder 11, the top end of the nitriding cylinder 11 is open, and the top open end of the nitriding cylinder 11 is assembled with a clamping part 3, the clamping part 3 is used to clamp the soft-base material to be nitrided, the bottom end of the nitriding cylinder 11 is assembled with a gas supply part 13, the gas supply part 13 is used to guide nitrogen into the interior of the nitriding cylinder 11, the heating part 2 includes an oil cylinder 21, the oil cylinder 21 is sleeved on the outside of the nitriding cylinder 11, and the two ends of the oil cylinder 21 are respectively fixed on the outer wall of the nitriding cylinder 11, a plurality of heating rods 22 are vertically fixed inside the oil cylinder 21, and the plurality of heating rods 22 are connected in series through wires, and the wires connected in series with the plurality of heating rods 22 are electrically connected to an external power supply line, and the outer sleeve of the oil cylinder 21 is fixed with The insulation sleeve 23, the bottom of the nitriding cylinder 11 is vertically fixed with a bracket 12, the end of the oil cylinder 21 is vertically connected and fixed with a filling cylinder 211, and a sealing plug is vertically inserted in the filling cylinder 211. During use, the soft base material is clamped and extruded by the clamping member 3, and then the clamping member 3 is assembled at the end of the nitriding cylinder 11, and then the nitrogen is transmitted to the air guide pipe 132 by the air supply member 13, and the nitrogen is sprayed on the outer surface of the soft base material through the spray rod 133 on the air guide pipe 132, and then the heat transfer oil is added through the filling cylinder 211 on the oil cylinder 21, and the heating rod 22 is powered, and the heating rod 22 heats the heat transfer oil in the oil cylinder 21, so as to ensure that when the surface of the soft base material is nitrided, the cavity can be evenly heated, the nitrogen element is accelerated to be attached to the surface of the soft base material, and the nitriding rate of the surface of the soft base material is improved.

[0024] See also Figure 4 The air supply member 13 includes a bottom plate 131, which is fixed to the bottom end of the nitriding cylinder 11, and an air guide pipe 132 is fixed through the bottom plate 131, and the end of the air guide pipe 132 is connected to the nitrogen supply pipeline, and an air supply pump 134 is assembled and connected on the air guide pipe 132, and the air guide pipe 132 extends to one end of the nitriding cylinder 11 and is fixed through a spray rod 133. During use, the air supply pump 134 on the air guide pipe 132 is started to drive nitrogen into the air guide pipe 132, and the nitrogen is sprayed onto the outer surface of the soft base material through the spray rod 133 on the air guide pipe 132.

[0025] See also Figure 5The clamping member 3 includes a screw cap 31, two slide frames 32 are horizontally and symmetrically fixed inside the screw cap 31, and slide plates 33 are slidably assembled on the two slide frames 32, clamping columns 34 are horizontally fixed to the adjacent ends of the slide plates 33 on the two slide frames 32, and springs 35 are horizontally fixed to the two slide frames 32, and the other end of the spring 35 is fixed to the slide plate 33. An internal thread 111 is provided on the inner circumferential surface of the nitriding cylinder 11, and the internal thread 111 of the nitriding cylinder 11 is assembled and connected with the screw cap 31. During use, the soft base material is set between the two slide plates 33 of the screw cap 31, and then the two slide plates 33 are pushed to move toward each other under the support of the deformation force of the spring 35, driving the clamping column 34 to squeeze and clamp the soft base material.

[0026] Working principle: During use, the soft base material is clamped and extruded by the clamping member 3, and then the clamping member 3 is assembled at the end of the nitriding cylinder 11, and then the nitrogen is transmitted to the air guide pipe 132 by the air supply member 13, and the nitrogen is sprayed on the outer surface of the soft base material through the spray rod 133 on the air guide pipe 132, and then the heat transfer oil is added through the filling cylinder 211 on the oil cylinder 21, and the heating rod 22 is powered, and the heating rod 22 heats the heat transfer oil in the oil cylinder 21 to ensure that the cavity can be evenly heated when the surface of the soft base material is nitrided.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A chamber structure for a soft base material plasma nitriding device, characterized in that: The invention comprises a nitriding part (1), a heating part (2) and a clamping part (3), wherein the nitriding part (1) comprises a nitriding cylinder (11), the top end of the nitriding cylinder (11) is open, and the clamping part (3) is assembled at the top open end of the nitriding cylinder (11), and the clamping part (3) is used to clamp the soft base material to be nitrided. The bottom end of the nitriding cylinder (11) is assembled with a gas supply part (13), and the gas supply part (13) is used to guide nitrogen into the interior of the nitriding cylinder (11). The heating part (2) comprises an oil cylinder (2 1), the oil cylinder (21) is sleeved on the outside of the nitriding cylinder (11), and the two ends of the oil cylinder (21) are respectively fixed on the outer wall of the nitriding cylinder (11), a plurality of heating rods (22) are vertically fixed inside the oil cylinder (21), and the plurality of heating rods (22) are connected in series through wires, and the wires connected in series of the plurality of heating rods (22) are electrically connected to an external power supply line, a heat-insulating sleeve (23) is sleeved and fixed on the outside of the oil cylinder (21), and a bracket (12) is vertically fixed to the bottom of the nitriding cylinder (11).

2. The chamber structure for a soft base material plasma nitriding device according to claim 1, characterized in that: The gas supply component (13) comprises a bottom plate (131), the bottom plate (131) is fixed to the bottom end of the nitriding cylinder (11), and a gas guide pipe (132) is fixed through the bottom plate (131), and the end of the gas guide pipe (132) is connected to the nitrogen supply pipeline.

3. The chamber structure for a soft base material plasma nitriding device according to claim 2, characterized in that: The air guide pipe (132) is connected to and assembled with an air supply pump (134), and one end of the air guide pipe (132) extending to the nitriding cylinder (11) is penetrated and fixed with a spray rod (133).

4. The chamber structure for a soft base material plasma nitriding device according to claim 3, characterized in that: The clamping member (3) comprises a screw cover (31), two sliding frames (32) are horizontally and symmetrically fixed inside the screw cover (31), and sliding plates (33) are slidably assembled on the two sliding frames (32).

5. The chamber structure for a soft base material plasma nitriding device according to claim 4, characterized in that: Clamping columns (34) are horizontally fixed to adjacent ends of the slide plates (33) on the two slide frames (32), and springs (35) are horizontally fixed to the two slide frames (32), with the other end of the spring (35) being fixed to the slide plate (33).

6. The chamber structure for a soft base material plasma nitriding device according to claim 5, characterized in that: An internal thread (111) is provided on the inner circumferential surface of the nitriding cylinder (11), and the internal thread (111) of the nitriding cylinder (11) is assembled and connected to the screw cover (31).

7. The chamber structure for a soft base material plasma nitriding device according to claim 6, characterized in that: The end of the oil cylinder (21) is vertically connected and fixed with a filling cylinder (211), and a sealing plug is vertically inserted into the filling cylinder (211).

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