CN106555189A - A kind of screw pickling processing method - Google Patents
A kind of screw pickling processing method Download PDFInfo
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- CN106555189A CN106555189A CN201510636433.0A CN201510636433A CN106555189A CN 106555189 A CN106555189 A CN 106555189A CN 201510636433 A CN201510636433 A CN 201510636433A CN 106555189 A CN106555189 A CN 106555189A
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- screw
- clear water
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- epithelium
- room temperature
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Abstract
The invention discloses a kind of screw pickling processing method, including step：（1）Pan feeding：Need to product to be processed hang in annealing furnace, cover tightly bell；（2）Hyperthermic treatment：Annealing in-furnace temperature is slowly increased to into 680 DEG C -760 DEG C by room temperature with 3-4 hours；（3）Isothermal holding：Described material 1018,1022 wire rods keep 4-6h at 680 DEG C -715 DEG C；Described material is 10B21, and 1039, CH38F wire rods keep 5.5-7.5h at 740 DEG C -760 DEG C；（4）Cooling is processed：Annealing in-furnace temperature is slowly dropped to into less than 550 DEG C with 3-4 hours, room temperature is then cooled to the furnace；The present invention is heated to appropriate temperature wire rod, keeps certain hour, then slowly cools down, and to adjust crystalline structure, reduces hardness, improves wire rod room temperature processability.
Description
Technical field
The present invention relates to a kind of screw pickling processing method.
Background technology
Screw would generally carry out melanism, and for aesthetics, some screws can be carried out to this by emery wheel while melanism
Friction place to go melanism, but some screw machining devices at this stage would generally be excessively near or too far so that degree of friction differs apart from screw because of emery wheel, causes screw thick or thin diversified in specifications, has had a strong impact on the production efficiency of screw.
The content of the invention
It is an object of the invention to provide a kind of screw pickling processing method, removes the oxide-film of wire surface, and forms one layer of phosphate film in metal surface, taken out in the course of processing such as line and cold pier or shaping with reducing wire rod, the scratch to tool and mould.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of screw pickling processing method, including step：
（1）Pickling：Whole product is immersed into three hydrochloric acid trough 3-8 minutes that room temperature, concentration are 20-25% respectively；
（2）Clear water：Rinsed with clear water, remove corrosion product of the wire surface Jing after HCl treatment；
（3）Oxalic acid：Increase the activity of metal, so that the epithelium that subsequent processing is generated is more fine and close.
（4）Epithelium process：Product is immersed into phosphate, screw surface is contacted with chemical synthesis treatment liquid, screw dissolving generates insoluble compound such as Zn2Fe(PO4)24H2O, is attached to steel surface and forms epithelium；
（5）Clear water：The product rinsed after percutaneous film process with clear water, removes epithelial surfaces residue；
（6）Lubricant：Addition lubricant, with metallic soap（Such as soda soap）Reaction forms hard metallic soap layer.
Beneficial effects of the present invention：
The present invention removes the oxide-film of wire surface, and forms one layer of phosphate film in metal surface, is taken out in the course of processing such as line and cold pier or shaping with reducing wire rod, the scratch to tool and mould.
Specific embodiment
Below, the present invention will be further described in conjunction with the embodiments.
A kind of screw pickling processing method, including step：
（1）Pickling：Whole product is immersed into three hydrochloric acid trough 3-8 minutes that room temperature, concentration are 20-25% respectively；
（2）Clear water：Rinsed with clear water, remove corrosion product of the wire surface Jing after HCl treatment；
（3）Oxalic acid：Increase the activity of metal, so that the epithelium that subsequent processing is generated is more fine and close.
（4）Epithelium process：Product is immersed into phosphate, screw surface is contacted with chemical synthesis treatment liquid, screw dissolving generates insoluble compound such as Zn2Fe(PO4)24H2O, is attached to steel surface and forms epithelium；
（5）Clear water：The product rinsed after percutaneous film process with clear water, removes epithelial surfaces residue；
（6）Lubricant：Addition lubricant, with metallic soap（Such as soda soap）Reaction forms hard metallic soap layer.
The present invention removes the oxide-film of wire surface, and forms one layer of phosphate film in metal surface, is taken out in the course of processing such as line and cold pier or shaping with reducing wire rod, the scratch to tool and mould.
Above example only not limits technical scheme described in the invention to illustrate the present invention；Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, it will be understood by those within the art that, still the present invention can be modified or equivalent；And all are without departing from technical scheme and its improvement of the spirit and scope of the present invention, all should cover in scope of the presently claimed invention.
Claims (1)
1. a kind of screw pickling processing method, including step：
（1）Pickling：Whole product is immersed into three hydrochloric acid trough 3-8 minutes that room temperature, concentration are 20-25% respectively；
（2）Clear water：Rinsed with clear water, remove corrosion product of the wire surface Jing after HCl treatment；
（3）Oxalic acid：Increase the activity of metal, so that the epithelium that subsequent processing is generated is more fine and close；
（4）Epithelium process：Product is immersed into phosphate, screw surface is contacted with chemical synthesis treatment liquid, screw dissolving generates insoluble compound such as Zn2Fe(PO4)2 4H2O, is attached to steel surface and forms epithelium；
（5）Clear water：The product rinsed after percutaneous film process with clear water, removes epithelial surfaces residue；
（6）Lubricant：Addition lubricant, with metallic soap（Such as soda soap）Reaction forms hard metallic soap layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636433.0A CN106555189A (en) | 2015-09-30 | 2015-09-30 | A kind of screw pickling processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636433.0A CN106555189A (en) | 2015-09-30 | 2015-09-30 | A kind of screw pickling processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106555189A true CN106555189A (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510636433.0A Pending CN106555189A (en) | 2015-09-30 | 2015-09-30 | A kind of screw pickling processing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106555189A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557798A (en) * | 2017-10-25 | 2018-01-09 | 苏州华丰不锈钢紧固件有限公司 | A kind of fastener raw material acid cleaning process |
| CN109434382A (en) * | 2018-11-13 | 2019-03-08 | 泰州市环星不锈钢有限公司 | A kind of screw production technology |
| CN110369953A (en) * | 2019-07-19 | 2019-10-25 | 苏州中新精密工业有限公司 | A kind of production technology of screw |
| CN110863157A (en) * | 2019-11-28 | 2020-03-06 | 苏州法思特精密五金有限公司 | Corrosion-resistant machining forming process for stainless steel screw |
-
2015
- 2015-09-30 CN CN201510636433.0A patent/CN106555189A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557798A (en) * | 2017-10-25 | 2018-01-09 | 苏州华丰不锈钢紧固件有限公司 | A kind of fastener raw material acid cleaning process |
| CN109434382A (en) * | 2018-11-13 | 2019-03-08 | 泰州市环星不锈钢有限公司 | A kind of screw production technology |
| CN110369953A (en) * | 2019-07-19 | 2019-10-25 | 苏州中新精密工业有限公司 | A kind of production technology of screw |
| CN110863157A (en) * | 2019-11-28 | 2020-03-06 | 苏州法思特精密五金有限公司 | Corrosion-resistant machining forming process for stainless steel screw |
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Application publication date: 20170405 |
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| WD01 | Invention patent application deemed withdrawn after publication |