CN105714242A - 20CrMnMo steel driving-shaft carburizing technology - Google Patents
20CrMnMo steel driving-shaft carburizing technology Download PDFInfo
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- CN105714242A CN105714242A CN201410727474.6A CN201410727474A CN105714242A CN 105714242 A CN105714242 A CN 105714242A CN 201410727474 A CN201410727474 A CN 201410727474A CN 105714242 A CN105714242 A CN 105714242A
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- carburizer
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- carburizing
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- power transmission
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Abstract
The invention discloses a 20CrMnMo steel driving-shaft carburizing technology. The technology comprises 1, putting a workpiece into a box, carrying out furnace heating and keeping the temperature of 720-750 DEG C for 2-2.5h, 2, carrying out carburizing at a carburizing temperature of 900-905 DEG C for 50-60min, carrying out air cooling to a temperature of 280 DEG C and opening the box, 3, heating the workpiece to a temperature of 780-800 DEG C in a protective atmosphere for 60-80min and cooling the workpiece in oil and 4, heating the workpiece in a nitrate tank to a temperature of 300-350 DEG C, keeping the temperature for 45-50min and carrying out water cooling. The technology has simple carburizing processes and substantially improves processing performances of a workpiece.
Description
Technical field
The present invention relates to a kind of 20CrMnMo steel power transmission shaft carburization process.
Background technology
Carburizing is the one to Treatment of Metal Surface, what adopt carburizing mostly is mild steel or low-alloy steel, concrete grammar is to be inserted by workpiece in active carburizing medium, it is heated to the single phase austenite district of 900--950 degree Celsius, after insulation enough time, making the activated carbon atom decomposited in carburizing medium penetrate into steel part top layer, thus obtaining top layer high-carbon, heart portion still keeps original composition.
Current 20CrMnMo steel power transmission shaft carburization process is more complicated, also without unified specification, it does not have unified standard, the steel power transmission shaft quality causing production is uneven, a lot of operations that repeat also make under production efficiency, increase the work burden of workman, make the competitiveness of product in market not high simultaneously.For some operators just entered a profession, it does not have a clear and definite method technique, cause, when operation, mistakes and omissions often occur, in some instances it may even be possible to cause serious consequence.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of 20CrMnMo steel power transmission shaft carburization process, and this carburizing process method is simple, can significantly improve the processing characteristics of workpiece.
For achieving the above object, the invention provides a kind of 20CrMnMo steel power transmission shaft carburization process, it is characterised in that comprise the steps, 1) workpiece vanning is heated with stove, first heat at 720-750 DEG C, be incubated 2-2.5 hour；
2) Carburization Treatment 50-60min at 900-905 DEG C of temperature, air cooling is unpacked after 280 DEG C；
3) in the protective atmosphere of 780-800 DEG C, heat 60-80min, cool down in oil；
4) in nitrate groove, it is heated to 300-350 DEG C, is incubated 45-50min, water-cooled.
Further, the 1) preparation of carburizer and formula thereof: adopt solid activated carbon as carburizer, with the 55% new old carburizer of carburizer+45% during production, disposable prepare needed for this batch of part with carburizer, stir, and dry in electric furnace, temperature is 200-250 DEG C, time 2-3h.
Further, carburizing part shove charge method: carburizing part loads in steel plate irony case.
The invention has the beneficial effects as follows: the carburizing process method of the present invention is simple, can significantly improve the processing characteristics of workpiece.
Detailed description of the invention
Technical scheme disclosed by the invention is a kind of 20CrMnMo steel power transmission shaft carburization process, comprises the steps, 1) workpiece vanning is heated with stove, first heat for 750 DEG C, be incubated 2.5 hours；
2) Carburization Treatment 50min at 905 DEG C of temperature, air cooling is unpacked after 280 DEG C；
3) in the protective atmosphere of 800 DEG C, heat 60min, cool down in oil；
4) in nitrate groove, it is heated to 350 DEG C, is incubated 50min, water-cooled.
Further, the 1) preparation of carburizer and formula thereof: adopt solid activated carbon as carburizer, with the 55% new old carburizer of carburizer+45% during production, disposable prepare needed for this batch of part with carburizer, stir, and dry in electric furnace, temperature is 200-250 DEG C, time 2-3h.
Further, carburizing part shove charge method: carburizing part loads in steel plate irony case.
The carburizing process method of the present invention is simple, can significantly improve the processing characteristics of workpiece.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (3)
1. a 20CrMnMo steel power transmission shaft carburization process, it is characterised in that comprise the steps, 1) workpiece vanning is heated with stove, first carry out heating at 720-750 DEG C, be incubated 2-2.5 hour；
2) Carburization Treatment 50-60min at 900-905 DEG C of temperature, air cooling is unpacked after 280 DEG C；
3) in the protective atmosphere of 780-800 DEG C, heat 60-80min, cool down in oil；
4) in nitrate groove, it is heated to 300-350 DEG C, is incubated 45-50min, water-cooled.
2. 20CrMnMo steel power transmission shaft carburization process according to claim 1, it is characterized in that, the preparation of carburizer and formula thereof: adopt solid activated carbon as carburizer, 55% new carburizer+45% old carburizer during production, disposable prepare needed for this batch of part with carburizer, stir, and dry in electric furnace, temperature is 200-250 DEG C, time 2-3h.
3. 20CrMnMo steel power transmission shaft carburization process according to claim 1, it is characterised in that carburizing part shove charge method: carburizing part loads in steel plate irony case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727474.6A CN105714242A (en) | 2014-12-05 | 2014-12-05 | 20CrMnMo steel driving-shaft carburizing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727474.6A CN105714242A (en) | 2014-12-05 | 2014-12-05 | 20CrMnMo steel driving-shaft carburizing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105714242A true CN105714242A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727474.6A Pending CN105714242A (en) | 2014-12-05 | 2014-12-05 | 20CrMnMo steel driving-shaft carburizing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097723A (en) * | 2018-07-17 | 2018-12-28 | 安徽致精机电科技有限公司 | A kind of pack carburizing method of gear |
-
2014
- 2014-12-05 CN CN201410727474.6A patent/CN105714242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097723A (en) * | 2018-07-17 | 2018-12-28 | 安徽致精机电科技有限公司 | A kind of pack carburizing method of gear |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |
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| WD01 | Invention patent application deemed withdrawn after publication |