CN103438759B - Gun tube surface treatment process - Google Patents
Gun tube surface treatment process Download PDFInfo
- Publication number
- CN103438759B CN103438759B CN201310340674.1A CN201310340674A CN103438759B CN 103438759 B CN103438759 B CN 103438759B CN 201310340674 A CN201310340674 A CN 201310340674A CN 103438759 B CN103438759 B CN 103438759B
- Authority
- CN
- China
- Prior art keywords
- workpiece
- surface treatment
- gun tube
- polishing
- inner hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to a gun tube surface treatment process, which sequentially comprises steps such as workpiece inner and outer surface mechanical polishing, degreasing cleaning and blow-drying, preheating, compound salt bath treatment, air cooling, hot water cleaning, cold water cleaning, blow-drying, inner hole polishing and grinding, outer surface polishing, degreasing cleaning, blow-drying, preheating, oxidation, air cooling, hot water cleaning, cold water cleaning, blow-drying, oil coating and the like. A gun tube, particularly a slender gun tube is subjected to surface treatment by the gun tube surface treatment process provided by the invention, an inner hole erosion resistant layer has good size consistency, and the inner hole roughness is higher than 0.2; the influence on the inner hole size in the treatment process is small, and the deformation quantity of the inner hole straightness of the slender gun tube does not exceed 1mum. The high-precision requirement of the inner hole size of the gun tube is met; in addition, the gun tube processed by the gun tube surface treatment process provided by the invention has a good overall appearance.
Description
Technical field
The present invention relates to a kind of gun barrel method for surface hardening of hole size high-precision requirement, particularly relate to the process of surface treatment of the steel elongate barrel of the following different inner diameters specification of internal diameter 20mm.
Background technology
Gun barrel is one of main component part of firearms, normally makes with the metal tube of heat-resisting not flexible type and forms, and requires that its endoporus can bear the ablation of gunpowder under high-temperature and high-pressure conditions; The anticorrosion intensive treatment layer thickness of its endoporus answers uniformity simultaneously, and must not more than the tolerance of 1 μm to the variable effect of hole size when carrying out anticorrosion intensive treatment; Gun barrel entirety also needs the appearance requirement possessing high-quality.
At present, for the steel elongate barrel that aperture is below 20mm, the chromed hardened treatment process of usual employing deep hole, after the method process, the layers of chrome of endoporus can meet most of performance requirement of gun barrel, but chrome-plated process has significant limitation, mainly the dimensional uniformity of deep hole layers of chrome is poor, has had a strong impact on properties of product.All also there are some defects that cannot repair in other processing method, as size, outward appearance, intensity, distortion etc., even if these defects can be repaired, does not also reach the serviceability requirement that product is important.
Summary of the invention
For the above-mentioned defect that the process of surface treatment of gun barrel in prior art exists, the object of this invention is to provide a kind of gun barrel process of surface treatment, the particularly process of surface treatment of elongate barrel, the surface treatment of gun barrel is carried out by this technique, the high-precision requirement of gun barrel hole size can not only be met, and the dimensional uniformity of inner bore anti-corrosive layer is good, gun barrel overall appearance is good.
To achieve these goals, present invention employs following technical scheme:
A kind of gun barrel process of surface treatment, comprises the following steps:
The surfaces externally and internally of step 1. pair workpiece carries out machine glazed finish;
Workpiece cleaning is deoiled and is dried up by step 2.;
Workpiece is carried out being preheated to 340-360 DEG C by step 3., carries out the process of QPQ compound salt bath;
The workpiece completing the process of QPQ compound salt bath is vertically placed by step 4., and air cooling is to 100-130 DEG C;
Step 5. first uses the hot water of more than 70 DEG C, then cleans residual salt with cold water to workpiece, and dries up;
Step 6. polishing grinding work-piece endoporus, polishing workpiece outer surface, undertaken cleaning and drying up by workpiece;
Workpiece is carried out preheating and is oxidized by step 7., and air cooling is to 100-130 DEG C;
Step 8. first uses the hot water of more than 70 DEG C, then to clean workpiece with cold water and dry up;
Step 9. is by workpiece oiling.
Preferably, in step 6, during polishing grinding work-piece endoporus, first carry out rough polishing with bristles brush, then be coated with soft cloth brush and be covered with diamond polishing cream effects on surface and carry out milled processed.This glossing can not disfiguring workpiece endoporus, does not affect hole size, and endoporus roughness can be made to reach more than 0.2.
Preferably, in step 9, with the miscella of kerosene and displacing type rust preventive oil, dip-coating is carried out to workpiece.
First air cooling, then adopt hot water cleaning respectively, the step of cold water cleaning to lower the temperature process stage by stage to workpiece, avoids rapid cooling to occur the problem of workpiece deformation.
The invention has the beneficial effects as follows: by gun barrel process of surface treatment of the present invention to gun barrel particularly elongate barrel carry out surface treatment, the dimensional uniformity of inner bore anti-corrosive layer is good, and endoporus roughness reaches more than 0.2; And little on the impact of hole size in processing procedure, the deflection that elongate barrel endoporus is directly spent is no more than 1 μm.Meet the high-precision requirement of gun barrel hole size; In addition, good by the gun barrel overall appearance after gun barrel process of surface treatment processing of the present invention.
Detailed description of the invention
Below the specific embodiment of the present invention is described in further details.
Gun barrel process of surface treatment of the present invention mainly comprises the following steps:
Machine glazed finish workpiece surfaces externally and internally → deoil cleans and dry up → preheating → compound salt bath process → air cooling → hot water cleaning → cold water cleans → dries up → polishing inner bore grinding → polished exterior surface → deoil clean → dry up → preheating → oxidation → air cooling → hot water cleaning → cold water cleans → dries up → oiling
During concrete enforcement, first the surfaces externally and internally of workpiece is carried out polishing mechanically, make the surface at each position reach the requirement of pre-treatment; Again the greasy dirt of surface of the work, foul etc. are washed away, and dry up surface moisture; Then carry out the pre-heat treatment, be preheated to 340-360 DEG C, prepare to carry out the process of compound salt bath; Carry out the process of compound salt bath by the parameter of setting, form QPQ strengthening layer; After completing the process of compound salt bath, workpiece is vertically placed and carries out air cooling, workpiece temperature must be down to less than 130 DEG C, is generally down to 100-130 DEG C, then first uses the hot water of more than 70 DEG C, with cold water, residual salt is cleaned to workpiece again, the water of described cold water and room temperature, first air cooling, then by the method for hot water and cold water cleaning, workpiece is lowered the temperature process stage by stage respectively, the workpiece deformation that quenching can be avoided to cause, dries up workpiece after cleaning residual salt.
The process of QPQ compound salt bath is a kind of permeation enhanced treatment technology, workpiece through QPQ process possesses good antiseptic property, powder gases ablation to a certain degree can be born, and the change of workpiece size can not be caused in the process of process, but to loosen coarse crystallization with one deck can be formed at surface of the work during the method process, therefore after through the process of QPQ compound salt bath, also cleaning dries up, need to carry out polishing to workpiece, first polishing grinding gun barrel endoporus, hand-operated electric drill clamping bristles brush is first adopted to carry out rough polishing to endoporus, remove thick loose crystalline particle, be covered with diamond polishing cream with soft cloth brush painting again and milled processed is carried out to bore area, preferably have employed the diamond polishing cream of granularity 2.5 μm in the present embodiment, the roughness of endoporus should be checked at any time at process of lapping, this glossing can not disfiguring workpiece endoporus, do not affect hole size, and endoporus roughness can be made to reach more than 0.2.And then polished exterior surface, excircle part adopts mechanical system to remove the loose coarse crystallization on surface, improves appearance quality, adopts cloth dish to carry out polishing and can obtain full light effect, adopt varigrained shot to carry out bead and can obtain matte effect; The workpiece of coarse crystallization of skimming is carried out oxidation processes, to obtain ornamental appearance of black; After oxidation processes, then first use the hot water of more than 70 DEG C, then with cold water, workpiece is cleaned, and dry up; Finally carry out oiling, to improve the antiseptic power of workpiece, the present embodiment adopts the miscella of kerosene and 204-1 displacing type rust preventive oil to carry out dip-coating to workpiece.
As mentioned above, by gun barrel process of surface treatment of the present invention to gun barrel particularly elongate barrel carry out surface treatment, the dimensional uniformity of inner bore anti-corrosive layer is good, and little on the impact of hole size in processing procedure, meets the high-precision requirement of gun barrel hole size; In addition, good by the gun barrel overall appearance after gun barrel process of surface treatment processing of the present invention.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. a gun barrel process of surface treatment, is characterized in that, comprises the following steps:
The surfaces externally and internally of step 1. pair workpiece carries out machine glazed finish;
Workpiece cleaning is deoiled and is dried up by step 2.;
Workpiece is carried out being preheated to 340-360 DEG C by step 3., carries out the process of compound salt bath;
The workpiece completing the process of compound salt bath is vertically placed by step 4., and air cooling is to 100-130 DEG C;
Step 5. first uses the hot water of more than 70 DEG C, then cleans residual salt with cold water to workpiece, and dries up;
Step 6. polishing grinding work-piece endoporus, polishing workpiece outer surface, undertaken cleaning and drying up by workpiece;
Workpiece is carried out preheating and liquid oxidizing by step 7., and air cooling is to 100-130 DEG C;
Step 8. first uses the hot water of more than 70 DEG C, then to clean workpiece with cold water and dry up;
Step 9. is by workpiece oiling.
2. gun barrel process of surface treatment according to claim 1, is characterized in that, in step 6, during polishing grinding work-piece endoporus, first carries out rough polishing with bristles brush, then is coated with soft cloth brush and is covered with diamond polishing cream effects on surface and carries out milled processed.
3. gun barrel process of surface treatment according to claim 1, is characterized in that, in step 9, carries out dip-coating with the miscella of kerosene and displacing type rust preventive oil to workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310340674.1A CN103438759B (en) | 2013-08-06 | 2013-08-06 | Gun tube surface treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310340674.1A CN103438759B (en) | 2013-08-06 | 2013-08-06 | Gun tube surface treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103438759A CN103438759A (en) | 2013-12-11 |
| CN103438759B true CN103438759B (en) | 2014-12-31 |
Family
ID=49692455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310340674.1A Expired - Fee Related CN103438759B (en) | 2013-08-06 | 2013-08-06 | Gun tube surface treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438759B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398547A (en) * | 2016-08-30 | 2017-02-15 | 山东新景表业有限公司 | Polishing paste |
| CN110953924A (en) * | 2019-12-10 | 2020-04-03 | 凯诗雷(上海)新材料有限公司 | Method for shortening cooling time of gun barrel or gun barrel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653337A (en) * | 2009-08-28 | 2010-02-24 | 惠州宏利五金塑胶制品厂有限公司 | Pressure cooker and manufacturing method thereof |
| CN201507644U (en) * | 2009-09-29 | 2010-06-16 | 韶关市卫士液压科技有限公司 | Hydraulic cylinder with high performance, high reliability, and long service life |
| CN203050537U (en) * | 2012-12-24 | 2013-07-10 | 李永祥 | Anti-corrosive sucker rod |
| CN103205668A (en) * | 2013-04-28 | 2013-07-17 | 莱州天润机械有限公司 | Application of QPQ (Quench-Polish-Quench) salt bath composite treatment process in handle rods at two ends of die stock and cutter bar frame |
-
2013
- 2013-08-06 CN CN201310340674.1A patent/CN103438759B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653337A (en) * | 2009-08-28 | 2010-02-24 | 惠州宏利五金塑胶制品厂有限公司 | Pressure cooker and manufacturing method thereof |
| CN201507644U (en) * | 2009-09-29 | 2010-06-16 | 韶关市卫士液压科技有限公司 | Hydraulic cylinder with high performance, high reliability, and long service life |
| CN203050537U (en) * | 2012-12-24 | 2013-07-10 | 李永祥 | Anti-corrosive sucker rod |
| CN103205668A (en) * | 2013-04-28 | 2013-07-17 | 莱州天润机械有限公司 | Application of QPQ (Quench-Polish-Quench) salt bath composite treatment process in handle rods at two ends of die stock and cutter bar frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103438759A (en) | 2013-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| King | Surface treatment & finishing of aluminium | |
| CN110042390B (en) | Flexible film-pasting laser cladding strengthening method for die-casting die | |
| CN103438759B (en) | Gun tube surface treatment process | |
| JP2009285043A (en) | Golf shaft, golf club, and manufacturing method of golf shaft | |
| CN106733557A (en) | The surface treatment method of rail traffic vehicles | |
| CN102864402A (en) | Thermal spraying welding process for manufacturing Babbitt metal | |
| CN107815710A (en) | A kind of process for improving chromium coating adhesion | |
| CN102616083A (en) | Surface treatment pattern vacuum deplating process (PPVD) | |
| KR101738089B1 (en) | Electrodeposition coating method that generation of bubbles is prevented | |
| CN104674158B (en) | Ternary co-permeation composite co-permeation treatment method for popo salt bath | |
| CN103586186A (en) | Vehicle coating process | |
| CN109440039A (en) | A kind of production technology of galvanized wire | |
| CN111020451A (en) | Treatment method for galling surface of automobile stamping die | |
| CN112893060A (en) | Top cover surface electrostatic spraying process | |
| CN112844992A (en) | Surface spraying process for automobile parts | |
| CN108070691A (en) | A kind of process of surface treatment of auto parts and components | |
| TW201416109A (en) | Golf club head surface treatment method | |
| CN112238276A (en) | Production process of brazed diamond tool | |
| KR100436597B1 (en) | Method for plating with molten aluminum | |
| JP2006334485A (en) | Multilayer coating film forming method | |
| WO2015089827A1 (en) | Method and system for lacquering outer tube of rod core of gas spring | |
| KR20190115872A (en) | Method for forming a metal coating | |
| CN109079445A (en) | A kind of aluminium alloy wheel hub of vehicle surface frosted coating process | |
| CN111593295B (en) | Surface treatment method for working cylinder of shock absorber | |
| JP4077598B2 (en) | ERW steel pipe manufacturing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20141231 Termination date: 20200806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |