CN1854543A - Hardened and toughened nut - Google Patents
Hardened and toughened nut Download PDFInfo
- Publication number
- CN1854543A CN1854543A CN 200510049759 CN200510049759A CN1854543A CN 1854543 A CN1854543 A CN 1854543A CN 200510049759 CN200510049759 CN 200510049759 CN 200510049759 A CN200510049759 A CN 200510049759A CN 1854543 A CN1854543 A CN 1854543A
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- screw
- hardened
- toughened
- manganese
- screw ailing
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Abstract
The invention includes a screw body, a screw stem, screw stem threads and a screw top. The screw body or the partial screw body is made of Cr10 or Cr20 manganese-titanium steels, or Cr20 or Cr40 steels, and is three-quarter hard finished by the quenching or the cementation quenching process in the heat treatment. If the cementation quenching process is adopted, the screw body containing low carbon steel in the cemented depth is hardened to 46 deg. or above 46 deg. / 60 kilogram pressure hardness.
Description
Technical field
The present invention is a kind of fastening piece accessory that is fixedly installed on associated machines or its parts that relates to, and more particularly, it is a kind of hardened and toughened nut.
Background technique
Knownly increase hard fastener screw nail, adopt the manufacturing of middle and high carbon steel material usually through heat treatment quenching and tempering, its hardness below 45 °/60 kilograms of pressure hardness, and follow closely the unison sclerosis of body entirely.Therefore caused hardness low bearing capacity not enough, easy to wear, hardness high the contradiction that is difficult to overcome of easy-rupturing, it has seriously restricted installing and using of specific (special) requirements position screw.
Summary of the invention
The objective of the invention is provides a kind of technology simple, widely used the technology of the present invention for overcoming deficiency of the prior art.
The technical solution adopted for the present invention to solve the technical problems is:
Hardened and toughened nut of the present invention comprises screw ailing body 1, nail bar 2, nail bar screw thread 3 and screw top 4; Screw ailing body 1 is all followed closely body or part nail system and is adopted 10 chromium-manganese-titanium steel materials or 20 chromium-manganese-titanium steel materials or 20 chrome steels or 40 chrome steel manufacturings, it is all followed closely body or part nail system and adopts the carburizing quenching process in heat-treatment quenching or the heat treatment that it is increased the processing of brinelling fire, if adopt promptly in it is oozed scope, from outward appearance to inner essence oozing of carburizing quenching process to be deep to 0.1-2.5mm with carbon, screw ailing body 1 part that contains low carbon steel in the oozing degree of depth or selective hardening to 46 ° or more than 46 °/60 kilograms of pressure hardness.
Screw ailing body 1 its carbon content before the not carburizing of described employing 10 chromium-manganese-titanium steel material manufacturings is 0.1-1.49 ‰.Described screw ailing body 1 all or locally adopt 40 chrome steel manufacturings, adopt heat-treatment quenching promptly its all nail bodies or part follow closely body harden to more than 46 ° or 46 °/60 kilograms of pressure hardness.
The invention has the beneficial effects as follows:
1, conventional modified screw adopts middle and high carbon steel manufacturing usually, processes through heat treatment quenching and tempering, the easy-rupturing that therefore the hardness height occurred, and it is easy to wear that hardness is low, and perhaps the too high user of cost such as is difficult to bear at a series of difficult problems.The present invention has changed cheapness and the steel material manufacturing of high-quality has changed quenching technical, thus solved at one stroke outer hard in a tough difficult problem;
2, hardened and toughened nut of the present invention both can the single-piece spinning use, and after supporting with hardened and toughened nut, can be widely used in the equipped use of specific (special) requirements position screw is arranged;
3, technology of the present invention is simple, makes identically, cheap, has good quality obvious social benefit.
Description of drawings
Fig. 1 is first embodiment of the invention non-standard screw nail general structure schematic representation.
Fig. 2 totally ties for second embodiment of the invention GB screw and indicates intention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
On Fig. 1 non-standard screw ailing body 1, be respectively equipped with nail bar 2, nail bar screw thread 3 and the screw top 4 of linking body structure.
On Fig. 2 GB screw ailing body 1, also be respectively equipped with nail bar 2, nail bar screw thread 3 and the screw top 4 of linking body structure.
No matter be nonstandard screw or GB screw, all can adopt 20 chrome steels or 40 chrome steels or 20 chromium-manganese-titanium steel material manufacturings, also can adopt 10 chromium-manganese-titanium steel material manufacturings of carbon content about about 1 ‰; For solving the outer hard interior tough difficult problem on the nail body, the present invention can adopt the carburizing quenching process in heat treatment quenching process or the heat treatment that it is quenched no matter adopt above which kind of steel to make.
Adopt the hardness and the degree of depth of its external layer of carburizing quenching process to decide its hardness and the degree of depth of external layer according to screw ailing body length and diameter, with long 70mm * Φ 18mm screw ailing body is example, its hardness is generally about 51 ° and is advisable, and its appearance rigidity layer is advisable about with 1mm.
No matter the present invention is non-ennuple shape screw, or GB shape screw, as long as: 1. adopted 10 chromium-manganese-titanium steel materials of carbon content about about 1 ‰ or 20 chrome steels or 40 chrome steels or 20 chromium-manganese-titanium steel materials to make; 2. adopted carburizing quenching process in the heat treatment; 3. adopt its hardness of heat treatment quenching process to reach more than 46 ° or 46 °/60 kilograms of pressure hardness with 40 chrome steel manufacturings; 4. adopt its external layer hardness of carburizing quenching process to reach more than 46 ° or 46 °/60 kilograms of pressure hardness; 5. adopt its appearance rigidity layer degree of depth of carburizing quenching process to reach 0.1-2.5mm, every possess above condition, and it just falls in the scope of patent protection of the present invention naturally.
Claims (5)
1, a kind of hardened and toughened nut, comprise screw ailing body (1), nail bar (2), nail bar screw thread (3) and screw top (4), it is characterized in that: described screw ailing body (1) all follows closely body or part nail system adopts 10 chromium-manganese-titanium steel materials or 20 chromium-manganese-titanium steel materials or 20 chrome steel manufacturings, it is all followed closely body or part nail system and adopts the carburizing quenching process in heat-treatment quenching or the heat treatment that it is increased the processing of brinelling fire, if adopt promptly in the scope of being oozed, it from outward appearance to inner essence being oozed of carburizing quenching process to be deep to 0.1-2.5mm with carbon, the screw ailing body (1) that contains low carbon steel in the oozing degree of depth all or part of harden to more than 46 ° or 46 °/60 kilograms of pressure hardness.
2, hardened and toughened nut according to claim 1 is characterized in that: its carbon content of screw ailing body (1) before the not carburizing that described employing 10 chromium-manganese-titanium steel materials are made is 0.1-1.49 ‰.
3, hardened and toughened nut according to claim 1 is characterized in that: the whole or local system of described screw ailing body (1) adopts 40 chrome steel manufacturings.
4, hardened and toughened nut according to claim 3 is characterized in that: the whole or part system employing heat treatment quenching process manufacturing of the screw ailing body (1) that described whole or local employing 40 chrome steels are made.
5, hardened and toughened nut according to claim 4, it is characterized in that: described all or locally adopt screw ailing body (1) that 40 chrome steels make after heat-treatment quenching processing, it is all followed closely body or part and follows closely body hardness and be more than 46 ° or 46 °/60 kilograms of pressure hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510049759 CN1854543A (en) | 2005-04-28 | 2005-04-28 | Hardened and toughened nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510049759 CN1854543A (en) | 2005-04-28 | 2005-04-28 | Hardened and toughened nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1854543A true CN1854543A (en) | 2006-11-01 |
Family
ID=37194917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510049759 Pending CN1854543A (en) | 2005-04-28 | 2005-04-28 | Hardened and toughened nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1854543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527599A (en) * | 2013-10-12 | 2014-01-22 | 常熟南师大发展研究院有限公司 | Reinforced bolt |
-
2005
- 2005-04-28 CN CN 200510049759 patent/CN1854543A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527599A (en) * | 2013-10-12 | 2014-01-22 | 常熟南师大发展研究院有限公司 | Reinforced bolt |
| CN103527599B (en) * | 2013-10-12 | 2015-12-23 | 常熟南师大发展研究院有限公司 | Strengthening bolt |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |