KR930006341A - Rigid austenitic stainless steel screws and manufacturing method - Google Patents
Rigid austenitic stainless steel screws and manufacturing method Download PDFInfo
- Publication number
- KR930006341A KR930006341A KR1019910016724A KR910016724A KR930006341A KR 930006341 A KR930006341 A KR 930006341A KR 1019910016724 A KR1019910016724 A KR 1019910016724A KR 910016724 A KR910016724 A KR 910016724A KR 930006341 A KR930006341 A KR 930006341A
- Authority
- KR
- South Korea
- Prior art keywords
- screw
- austenitic stainless
- stainless steel
- hardened layer
- austenitic
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title abstract 4
- 150000004767 nitrides Chemical class 0.000 claims abstract description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052731 fluorine Inorganic materials 0.000 claims abstract 2
- 239000011737 fluorine Substances 0.000 claims abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- 238000005121 nitriding Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
본 발명은 오스테나이트계 스테인레스나사 및 그 제조방법에 관한 것으로 오스테나이트계 스테인레스나사 표면을 질화경화층으로 형성하여 경질화하는 동시에 외부공기에 접촉하는 나사머리등의 부분에 대해서는 상기 질화경화층을 제거하고 그들 부분에 내식성의 오스테나이트계 스테인레스바탕을 드러내게 하여 녹슬기 어렵게 하고 있으며, 나사산의 부분등에는 질화결화층을 잔존시키고 있고 그 경도등이 향상되어 나사의 태핑성능등이 향상된다.The present invention relates to an austenitic stainless steel screw and a method for manufacturing the austenitic stainless steel screw. The surface of the austenitic stainless screw is hardened by a nitride hardened layer, and at the same time, the nitrided hardened layer is removed from portions such as screw heads that contact external air. The corrosion resistant austenitic stainless steel base is exposed to these parts, making it difficult to rust. The nitrided layer remains on the threaded part, and the hardness thereof is improved to improve the tapping performance of the screw.
또한 본 발명의 방법은 상기와 같은 경질 오스테나이트계 스테인레스나사의 질화처리에 앞서서 상기 스테인레스나사를 불소계가스분위기속에 유지 하고 그 표면에 불화막을 생성시켜서 그 상태로 질화하여 생성되는 질화결화층이 균일하고 깊어져서 양호한 표면성능을 갖는 경질 오스테나이트계 스테인게스 나사를 제조할수 있게 된다.In addition, the method of the present invention maintains the stainless screw in a fluorine-based gas atmosphere prior to the nitriding treatment of the hard austenitic stainless screw as described above, and produces a fluorinated film on the surface thereof so that the nitrided layer formed by nitriding in that state is uniform. The deeper austenitic stained thread screw having a good surface performance can be manufactured.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명의 대상으로 되는 오스테나이트계 셀프드릴링 스크류의 정면도이고,1 is a front view of an austenitic self-drilling screw of the present invention,
제2도는 질화처리로의 한예를 나타내는 단면도이고,2 is a cross-sectional view showing an example of a nitriding treatment,
제3도는 나사의 소정부분의 질화경화층을 제거하는 한예의 설명도이다.3 is an explanatory diagram of one example of removing the nitride hardened layer of a predetermined portion of the screw.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910016724A KR100213404B1 (en) | 1991-09-25 | 1991-09-25 | Stainless screw and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910016724A KR100213404B1 (en) | 1991-09-25 | 1991-09-25 | Stainless screw and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930006341A true KR930006341A (en) | 1993-04-21 |
| KR100213404B1 KR100213404B1 (en) | 1999-08-02 |
Family
ID=19320341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910016724A KR100213404B1 (en) | 1991-09-25 | 1991-09-25 | Stainless screw and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100213404B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100770667B1 (en) * | 2007-06-05 | 2007-10-29 | 이정걸 | A jig for surface treatment of the screw part of nuts |
-
1991
- 1991-09-25 KR KR1019910016724A patent/KR100213404B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100213404B1 (en) | 1999-08-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20090508 Year of fee payment: 11 |
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| LAPS | Lapse due to unpaid annual fee |