CN105880928A - Processing technique for positioning ring - Google Patents
Processing technique for positioning ring Download PDFInfo
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- CN105880928A CN105880928A CN201410793074.5A CN201410793074A CN105880928A CN 105880928 A CN105880928 A CN 105880928A CN 201410793074 A CN201410793074 A CN 201410793074A CN 105880928 A CN105880928 A CN 105880928A
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- temperature
- machining
- processing technique
- forging
- heating
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Abstract
The invention discloses a processing technique for a positioning ring. The processing technique is characterized by comprising the following steps of process flow: discharging, forging, annealing, machining, hardening and tempering, machining, ion nitriding, inspecting and obtaining a finished product. According to the processing technique disclosed by the invention, overall performance of the positioning ring can be improved, and the service life is prolonged.
Description
Technical field
The invention belongs to processing technique field, specifically a kind of locating ring processing technique.
Background technology
Locating ring is indispensable part in rotatable parts, while it runs up, and the alternate load concentrated also subject to height.Contact stress is big, thus produces strong friction phenomenon.The performance of locating ring directly determines service life of a machine, and locating ring requires high surface hardness and wear-resisting, and corrosion-resistant, the highest to required precision, it is desirable to deform little after heat treatment, by moderate blow load effect, main failure forms is abrasion.The problems such as to there is hardness the highest always and in view of existing locating ring, and wearability is not enough, its processing technique needs to be optimized further.
Summary of the invention
The deficiency existed in view of prior art, the purpose of the present invention is to propose to a kind of locating ring processing technique, can improve locating ring combination property and increase the service life.The technical scheme realizing the object of the invention is as follows:
A kind of locating ring processing technique, it is characterised in that this processing technique comprises the following steps:
(1) technological process: blanking → forging → annealing → machining → quenched → machining → glow discharge nitriding → inspection → finished product；
(2) selection: select 38CrMnAl steel；
(3) forging: heating-up temperature 1200～1250 DEG C, initial forging temperature 1250～1350 DEG C, final forging temperature ＞ 900 DEG C；
(4) annealing: heat with furnace temperature, heating-up temperature 950-990 DEG C, temperature retention time 2-2.6h, furnace cooling, cooling medium air；
(5) machining: roughing, it is thus achieved that coarse part；
(6) modifier treatment: Quenching Treatment, heating furnace is heated to 970-1000 DEG C, adds thermal medium nitrogen, temperature retention time 3-3.6h, and oil of quenching is cold；High tempering, temperature is 630～660 DEG C, temper medium air, tempering time 90-110min；
(7) glow discharge nitriding: nitriding temperature 530～590 DEG C, nitriding time 8～11h, gas pressure 130～580Pa, heating voltage 640～740V；
(8) machining: part is carried out retrofit, the roughness of the locating ring after processing is Ra ＜ 0.7 μm；
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and its operating procedure is as follows:
(1) technological process: blanking → forging → annealing → machining → quenched → machining → glow discharge nitriding → inspection → finished product；
(2) selection: select 38CrMnAl steel；
(3) forging: heating-up temperature 1200～1250 DEG C, initial forging temperature 1250～1350 DEG C, final forging temperature ＞ 900 DEG C；
(4) annealing: heat with furnace temperature, heating-up temperature 950-990 DEG C, temperature retention time 2-2.6h, furnace cooling, cooling medium air；
(5) machining: roughing, it is thus achieved that coarse part；
(6) modifier treatment: Quenching Treatment, heating furnace is heated to 970-1000 DEG C, adds thermal medium nitrogen, temperature retention time 3-3.6h, and oil of quenching is cold；High tempering, temperature is 630～660 DEG C, temper medium air, tempering time 90-110min；
(7) glow discharge nitriding: nitriding temperature 530～590 DEG C, nitriding time 8～11h, gas pressure 130～580Pa, heating voltage 640～740V；
(8) machining: part is carried out retrofit, the roughness of the locating ring after processing is Ra ＜ 0.7 μm.
Claims (1)
1. a locating ring processing technique, it is characterised in that this processing technique comprises the following steps:
(1) technological process: blanking → forging → annealing → machining → quenched → machining → glow discharge nitriding → inspection → finished product；
(2) selection: select 38CrMnAl steel；
(3) forging: heating-up temperature 1200～1250 DEG C, initial forging temperature 1250～1350 DEG C, final forging temperature ＞ 900 DEG C；
(4) annealing: heat with furnace temperature, heating-up temperature 950-990 DEG C, temperature retention time 2-2.6h, furnace cooling, cooling medium air；
(5) machining: roughing, it is thus achieved that coarse part；
(6) modifier treatment: Quenching Treatment, heating furnace is heated to 970-1000 DEG C, adds thermal medium nitrogen, temperature retention time 3-3.6h, and oil of quenching is cold；High tempering, temperature is 630～660 DEG C, temper medium air, tempering time 90-110min；
(7) glow discharge nitriding: nitriding temperature 530～590 DEG C, nitriding time 8～11h, gas pressure 130～580Pa, heating voltage 640～740V；
(8) machining: part is carried out retrofit, the roughness of the locating ring after processing is Ra ＜ 0.7 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410793074.5A CN105880928A (en) | 2014-12-19 | 2014-12-19 | Processing technique for positioning ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410793074.5A CN105880928A (en) | 2014-12-19 | 2014-12-19 | Processing technique for positioning ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105880928A true CN105880928A (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410793074.5A Pending CN105880928A (en) | 2014-12-19 | 2014-12-19 | Processing technique for positioning ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105880928A (en) |
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2014
- 2014-12-19 CN CN201410793074.5A patent/CN105880928A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Luo Wuxue Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Luo Wuxue Document name: Notification of before Expiration of Request of Examination as to Substance |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |