CN203548111U - Plasma nitriding connecting rod for refrigerator compressor - Google Patents
Plasma nitriding connecting rod for refrigerator compressor Download PDFInfo
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- CN203548111U CN203548111U CN201320457281.4U CN201320457281U CN203548111U CN 203548111 U CN203548111 U CN 203548111U CN 201320457281 U CN201320457281 U CN 201320457281U CN 203548111 U CN203548111 U CN 203548111U
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- connecting rod
- end body
- big end
- small end
- connnecting
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Abstract
The utility model provides a plasma nitriding connecting rod for a refrigerator compressor. The plasma nitriding connecting rod comprises a connecting rod big end body, the connecting rod big end body is provided with a connecting rod big end shaft hole, a connecting rod small end body and a connecting rod small end shaft hole arranged in the connecting rod small end body, and a nitride layer formed in a plasma nitriding mode is arranged on an outer circle surface of a connecting rod base body. The plasma nitriding connecting rod is reasonable in design and simple in structure, the principle that a plasma nitriding technology can change a structure of the surface of a part to reinforce surface hardness is utilized, and a nitriding process and operation are studied to be used for improving indexes such as product hardness, abrasion resistance, fatigue strength, corrosion resistance and burn resistance.
Description
[technical field]
The utility model relates to metallic material Field of Heat-treatment, more specifically, relates to the plasma nitrided connecting rod of a kind of freezer compressor.
[background technique]
From the seventies ion nitriding up till now the process for modifying surface such as ion deposition, Implantation become the problem of generally paying attention to both at home and abroad.Plasma nitriding is to improving the quality of products, save material, reduce labor intensity, reducing environmental pollution important in inhibiting.Plasma nitriding is a comprehensive application technology, has related to the multi-door frontier science such as discharge physics, vacuum, chemistry, electronics, materials science.Plasma nitrided principle is put into the negative-pressure container being connected with containing nitrogen medium using metal workpiece as negative electrode, the nitrogen hydrogen atom after energising in medium is ionized, and forms ion plasma between anode and cathode.Under the effect of ion plasma strong electrical field, the positive ion of nitrogen and hydrogen is to bombard to workpiece surface at a high speed.The kinetic energy of ion changes heat energy into, and heated parts surface is to temperature required.Due to the bombardment of ion, workpiece surface produces atom sputtering, thereby is purified, and simultaneously due to absorption and diffusion, nitrogen infiltrates workpiece surface.
At present, the nitrogenize mode adopting is on the market mainly gas nitriding and salt-bath nitriding, but this type of nitrogenize exists significant limitation always: (1) nitrogenize does not have directivity; (2) higher to the requirement of mother metal; (3) this type of connecting rod because of the high friction to connecting rod of side nitride layer hardness serious.So be badly in need of a kind of better nitrogenize mode of research and development, solve the problems referred to above.
[model utility content]
In view of this, main purpose of the present utility model is to provide a kind of freezer compressor plasma nitrided connecting rod, can solve wearing no resistance of existing in existing product, fatigue strength is low and corrosion resistance is low problem.
For achieving the above object, the technological scheme that the utility model is taked is: the utility model provides a kind of freezer compressor plasma nitrided connecting rod, comprise connnecting rod big end body, connnecting rod big end body is provided with connnecting rod big end axis hole, the connecting rod small end axis hole that connecting rod small end body and connecting rod small end body are provided with, it is characterized in that, connecting rod matrix periphery is provided with the nitride layer forming by plasma nitrided mode.
Preferably, nitride layer thickness is within the scope of 0.01-0.12 millimeter.
Preferably, connnecting rod big end body and connecting rod small end body adopt split-type structural, in the end of connnecting rod big end body, be shaped with V-type notch, on connecting rod small end body, be provided with the V-type projection matching with connnecting rod big end body V-type notch, the V-type projection of connecting rod small end body is inserted in the V-type notch of connnecting rod big end body, at connnecting rod big end body and connecting rod small end body joint, all have annular groove, in annular groove, be wound with fastening piece.
Preferably, at V-type notch top, be processed with circular-arc anti-tear mouthful.
Preferably, at the inwall of connnecting rod big end axis hole, be provided with the water treatment layer of 0.002-0.003 millimeter.
Preferably, at the inwall of connecting rod small end axis hole, be provided with the nitride layer of 0.01-0.012 millimeter.
Compared with prior art, the utlity model has following beneficial effect: 1. the plasma nitrided connecting rod of freezer compressor of the present utility model, the principle that the Organizational Structure of utilizing plasma nitrided technology can change part surface is strengthened surface hardness, nitriding process and operation have been probed into, in order to improve the indexs such as hardness, wear resistance, fatigue strength, corrosion resistance and the anti-burn of product; 2. the plasma nitrided connecting rod of freezer compressor of the present utility model, adopt glow discharge mode to carry out plasma nitrided to rod surface, this nitrogenize can make rod surface nitrogenize have directional selectivity, connecting rod is when nitrogenize, can carry out nitrogenize by only external disc, side, without nitride layer, can reduce wearing and tearing like this; 3. freezer compressor of the present utility model only need connect two part steel wires by the structure of plasma nitrided connecting rod, therefore, have simple in structure, easy to use, the life-span is grown, the rate of reducing the number of rejects and seconds and cost of production, and has improved working efficiency.
[accompanying drawing explanation]
Fig. 1 shows according to the partial section of the plasma nitrided connecting rod of the utility model embodiment one freezer compressor;
Fig. 2 shows according to the plasma nitrided schematic diagram of the plasma nitrided connecting rod of the utility model embodiment two freezer compressor;
Fig. 3 shows according to plasma nitrided bar linkage structure schematic diagram for the utility model embodiment three freezer compressor;
Fig. 4 shows according to plasma nitrided connecting rod A-A sectional view for the utility model embodiment three freezer compressor;
Mark the following drawings mark on figure by reference to the accompanying drawings:
1-matrix, 2-nitride layer, 3-connnecting rod big end body, 4-connecting rod small end body, 5-binding in wire, 31-connnecting rod big end axis hole, 32-V type notch, 33-annular groove, anti-tear mouthful of 34-, 41-connecting rod small end axis hole, 42-V type projection, 43-annular groove.
[embodiment]
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Embodiment one
Fig. 1 shows according to the partial section of the plasma nitrided connecting rod of the utility model embodiment one freezer compressor;
As shown in Figure 1, the plasma nitrided connecting rod of a kind of freezer compressor, comprise connnecting rod big end body 3, connnecting rod big end body is provided with connnecting rod big end axis hole 31, the connecting rod small end axis hole 41 that connecting rod small end body 4 and connecting rod small end body are provided with, connecting rod matrix 1 periphery is provided with the nitride layer 2 forming by plasma nitrided mode.
Embodiment two
Fig. 2 shows according to the plasma nitrided schematic diagram of the plasma nitrided connecting rod of the utility model embodiment two freezer compressor;
As shown in Figure 2, by clamping connecting rod, put into plasma nitrided stove, will in stove, be evacuated, input ammonia again, add voltage articulating negative pole, furnace wall connects positive pole, by glow discharging heating, ionization nitrogen ion infiltrates fast in rod surface like this, and only can carry out nitrogenize to the direction of fireplace.
Nitriding Technology of the present utility model can carry out on the surface of steel and cast iron, and the requirement of base material, than loose many of gas nitriding, salt-bath nitriding and other nitrogenize modes, is applicable to the requirement of any material.
Embodiment three
Fig. 3 shows according to plasma nitrided bar linkage structure schematic diagram for the utility model embodiment three freezer compressor; Fig. 4 shows according to plasma nitrided connecting rod A-A sectional view for the utility model embodiment three freezer compressor;
As shown in Figure 3,4, connnecting rod big end body 3 and connecting rod small end body 4 adopt split-type structural, in the end of connnecting rod big end body 3, be shaped with V-type notch, on connecting rod small end body 4, be provided with the V-type projection 42 matching with connnecting rod big end body 3V type notch 32, the V-type projection 42 of connecting rod small end body 4 is inserted in the V-type notch 32 of connnecting rod big end body 3, at connnecting rod big end body 3 and connecting rod small end body 4 joints, all have annular groove, in annular groove, be wound with fastening piece.
At V-type notch 32 tops, be processed with circular-arc anti-tear mouthful 34.
At the inwall of connnecting rod big end axis hole 31, be provided with the water treatment layer of 0.002-0.003 millimeter.
At the inwall of connecting rod small end axis hole 41, be provided with the nitride layer of 0.01-0.012 millimeter.
The principle that the Organizational Structure that above-described embodiment of the present utility model utilizes plasma nitrided technology can change part surface is strengthened surface hardness, nitriding process and operation have been probed into, in order to improve the indexs such as hardness, wear resistance, fatigue strength, corrosion resistance and the anti-burn of product; The plasma nitrided connecting rod of freezer compressor of the present utility model, adopt glow discharge mode to carry out plasma nitrided to rod surface, this nitrogenize can make rod surface nitrogenize have directional selectivity, connecting rod is when nitrogenize, can carry out nitrogenize by only external disc, side, without nitride layer, can reduce wearing and tearing like this; Freezer compressor of the present utility model only need connect two part steel wires by the structure of plasma nitrided connecting rod, therefore, have simple in structure, easy to use, the life-span is grown, the rate of reducing the number of rejects and seconds and cost of production, and has improved working efficiency.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. the plasma nitrided connecting rod of freezer compressor, comprise connnecting rod big end body (3), connnecting rod big end body is provided with connnecting rod big end axis hole (31), the connecting rod small end axis hole (41) that connecting rod small end body (4) and connecting rod small end body are provided with, it is characterized in that, connecting rod matrix (1) periphery is provided with the nitride layer (2) forming by plasma nitrided mode.
2. the plasma nitrided connecting rod of freezer compressor according to claim 1, is characterized in that, described nitride layer (2) thickness is within the scope of 0.01-0.12 millimeter.
3. the plasma nitrided connecting rod of freezer compressor according to claim 1, it is characterized in that, described connnecting rod big end body (3) and described connecting rod small end body (4) adopt split-type structural, end at described connnecting rod big end body (3) is shaped with V-type notch, on described connecting rod small end body (4), be provided with the V-type projection (42) matching with described connnecting rod big end body (3) V-type notch (32), the V-type projection (42) of described connecting rod small end body (4) is inserted in the V-type notch (32) of described connnecting rod big end body (3), at described connnecting rod big end body (3) and described connecting rod small end body (4) joint, all have annular groove, in described annular groove, be wound with fastening piece.
4. the plasma nitrided connecting rod of freezer compressor according to claim 1, is characterized in that, is processed with circular-arc anti-tear mouthful (34) at described V-type notch (32) top.
5. the plasma nitrided connecting rod of freezer compressor according to claim 1, is characterized in that, is provided with the water treatment layer of 0.002-0.003 millimeter at the inwall of described connnecting rod big end axis hole (31).
6. the plasma nitrided connecting rod of freezer compressor according to claim 1, is characterized in that, is provided with the nitride layer of 0.01-0.012 millimeter at the inwall of described connecting rod small end axis hole (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457281.4U CN203548111U (en) | 2013-07-30 | 2013-07-30 | Plasma nitriding connecting rod for refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457281.4U CN203548111U (en) | 2013-07-30 | 2013-07-30 | Plasma nitriding connecting rod for refrigerator compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548111U true CN203548111U (en) | 2014-04-16 |
Family
ID=50466238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320457281.4U Expired - Fee Related CN203548111U (en) | 2013-07-30 | 2013-07-30 | Plasma nitriding connecting rod for refrigerator compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548111U (en) |
-
2013
- 2013-07-30 CN CN201320457281.4U patent/CN203548111U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140730 |
|
| EXPY | Termination of patent right or utility model |