CN102660726A - Processing method for colorizing surface of spiral brace spring of piston ring into yellow brown - Google Patents
Processing method for colorizing surface of spiral brace spring of piston ring into yellow brown Download PDFInfo
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- CN102660726A CN102660726A CN2012101299331A CN201210129933A CN102660726A CN 102660726 A CN102660726 A CN 102660726A CN 2012101299331 A CN2012101299331 A CN 2012101299331A CN 201210129933 A CN201210129933 A CN 201210129933A CN 102660726 A CN102660726 A CN 102660726A
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- China
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- piston ring
- supporting spring
- processing method
- helical supporting
- ring helical
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Abstract
The invention discloses a processing method for colorizing the surface of a spiral brace spring of a piston ring into yellow brown and relates to the technical field of processing techniques of spiral brace springs of piston rings. The processing method comprises the following steps of: feeding the spiral brace spring of the piston ring, which is subjected to removal of an oxidation layer generated by heat setting through acid pickling in liquid sodium nitrite of 385+/-10DEG C for soaking for 10-20 seconds; and washing and drying with clear water. The spiral brace spring of the piston ring, which is produced by adopting the method disclosed by the invention, is uniform in surface color quality; and the processing method has the advantages of high production efficiency, high rate of graded products and facilitation for reduction of the production cost.
Description
Technical field
The present invention relates to the technology field of piston ring helical supporting spring.
Background technology
In the processing of piston ring helical supporting spring, the external client who has need to propose the requirement of filemot piston ring helical supporting spring, and for this reason, existing manufacturing enterprise great majority adopt pit furnace; Perhaps other devices of heating carry out heat treated with piston ring helical supporting spring, to reach painted purpose; But in these heating units, air can not produce complete convection current, and heat energy only depends on conduction or thermal radiation; Temperature is seriously inhomogeneous, and when piston ring helical supporting spring is put into heating unit, the central point piston ring helical supporting spring is with very serious near the piston ring helical supporting spring aberration of furnace wall; The product of producing is difficult to reach requirement of client, and, when piston ring helical supporting spring is incubated under 350 ℃ of conditions; The surface is prone to react with oxygen, the piston ring helical supporting spring surface is produced oxidation takes place, and gets rusty easily.
Summary of the invention
The object of the invention is to propose a kind of Industry Control that makes things convenient for, and the piston ring helical supporting spring surface colour of uniform coloring becomes filemot working method.
Technical scheme of the present invention is: after will placing 385 ± 10 ℃ liquid Sodium Nitrite to soak 10～20 seconds through the piston ring helical supporting spring after the zone of oxidation of heat setting type generation has been removed in pickling, adopt the clear water washing, drying.
The pending piston ring helical supporting spring of the present invention is the piston ring helical supporting spring after the zone of oxidation acidity that produces after by heat setting type of spring surface, and it is directly immersed Sodium Nitrite liquid, can avoid like zone of oxidation or other impurity painted influence.The present invention adopts the Sodium Nitrite liquid after the heating and melting that the piston ring helical supporting spring surface is handled; Because the Sodium Nitrite liquid that heat is melted does not almost have the temperature difference, after piston ring helical supporting spring immerses the uniform Sodium Nitrite liquid of temperature, avoided the temperature difference to the painted aberration influence that causes; And; Because piston ring helical supporting spring is in the Sodium Nitrite liquid atmosphere fully, has completely cut off air, has avoided atmospheric oxidation to painted influence.So the piston ring helical supporting spring surface chromaticness that adopts the inventive method to produce is even, production efficiency is high, and the percentage of A-class goods is high, is beneficial to reduce production costs.
Because the purity of Sodium Nitrite also can be to painted formation influence, so the present invention is at least 98% Sodium Nitrite with purity and places under 385 ± 10 ℃ of temperature condition heat to melt, and the said piston ring helical supporting spring of immersion after being incubated 30 ± 10 minutes.Through insulation, 385 ± 10 ℃ of high temperature that promptly continue can guarantee that the Sodium Nitrite purity before the immersion piston ring helical supporting spring is 100% with removals of fully volatilizing of the water molecules in the Sodium Nitrite, also can more effectively ensure the temperature homogeneity of Sodium Nitrite liquid.
Embodiment
The preparation of one, major equipment---salt bath furnace:
Salt bath furnace: the outside is a rectangular parallelepiped iron plate case, and there is 500mm the centre
3The stainless steel tank of square, between iron plate case and stainless steel tank, be provided with thermal insulation layer, in thermal insulation layer, interting electrically heated rod, and thermopair be housed.
Two, handle the early stage of colouring matter:
1, be the stainless steel tank of square that 98% Sodium Nitrite powder is put into salt bath furnace with 125kg purity.
2, heat up through electricity, make Sodium Nitrite be heated to 385 ± 10 ℃ of whole heat of generation and melt, and be incubated 30 ± 10 minutes.
Three, the pre-treatment of piston ring helical supporting spring:
Piston ring helical supporting spring after the heat setting type is adopted pickling, remove the zone of oxidation on surface.
Four, production process:
1, on a straight-bar, is nested with 200 pretreated piston ring helical supporting springs.
2, through the control straight-bar; It is in 385 ± 10 ℃ the Sodium Nitrite liquid 10～20 seconds that piston ring helical supporting spring is immersed temperature fully; And notice that the straight-bar that moves around is heated evenly piston ring helical supporting spring in solution after piston ring helical supporting spring immerses liquid.
3, through the control straight-bar, piston ring helical supporting spring is taken out from Sodium Nitrite liquid.
4, piston ring helical supporting spring is cleaned with clear water, natural airing gets final product.
Five, product surface characteristics:
Piston ring helical supporting spring surface chromaticness evenly presents tawny, no color differnece.
Claims (2)
1. the piston ring helical supporting spring surface colour becomes filemot working method; After it is characterized in that to place 385 ± 10 ℃ liquid Sodium Nitrite to soak 10～20 seconds through the piston ring helical supporting spring after the zone of oxidation of heat setting type generation has been removed in pickling; The washing of employing clear water, drying.
2. said piston ring helical supporting spring surface colour becomes filemot working method according to claim 1; It is characterized in that purity is at least 98% Sodium Nitrite places under 385 ± 10 ℃ of temperature condition heat to melt, and immerse said piston ring helical supporting spring after being incubated 30 ± 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101299331A CN102660726A (en) | 2012-04-28 | 2012-04-28 | Processing method for colorizing surface of spiral brace spring of piston ring into yellow brown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101299331A CN102660726A (en) | 2012-04-28 | 2012-04-28 | Processing method for colorizing surface of spiral brace spring of piston ring into yellow brown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102660726A true CN102660726A (en) | 2012-09-12 |
Family
ID=46770300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101299331A Pending CN102660726A (en) | 2012-04-28 | 2012-04-28 | Processing method for colorizing surface of spiral brace spring of piston ring into yellow brown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102660726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723262A (en) * | 2018-06-06 | 2018-11-02 | 南京飞燕活塞环股份有限公司 | A kind of delineation type piston ring helical supporting spring processing method |
-
2012
- 2012-04-28 CN CN2012101299331A patent/CN102660726A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723262A (en) * | 2018-06-06 | 2018-11-02 | 南京飞燕活塞环股份有限公司 | A kind of delineation type piston ring helical supporting spring processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120912 |