CN101614014A - Low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt - Google Patents
Low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt Download PDFInfo
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- CN101614014A CN101614014A CN200810048151A CN200810048151A CN101614014A CN 101614014 A CN101614014 A CN 101614014A CN 200810048151 A CN200810048151 A CN 200810048151A CN 200810048151 A CN200810048151 A CN 200810048151A CN 101614014 A CN101614014 A CN 101614014A
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Abstract
The present invention relates to low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt.Full-thread bolt is widely used in the slope retaining of road, and the supporting of tunnel, mine, Hydraulic and Hydro-Power Engineering is the most economical effective a kind of important tool that improves ground stability and solve complicated geotechnical engineering stable problem.Traditional cold rolling or hot rolling production process is permitted at least twice heating just can produce full-thread bolt, and performance height, efficient are low.The present invention utilizes a heating rolling perforation of low-alloy steel bar, carries out the moulding of waste heat full thread behind the tube reducing sizing, utilizes the whole normalizing of surplus temperature again, and thread hollow anchor stock is directly produced in online one-shot forming.This technology has solved traditional handicraft and has produced the drawback that threaded anchor rod efficient is low, energy consumption is high, of low quality.
Description
Affiliated technical field
The present invention relates to a kind of anchor pole, especially low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt.
Background technology
At present, thread hollow anchor stock is widely used in the advance support and the slope retaining of highway, railway, tunnel, mine, hydroelectric project and beneath cavern, is the most economical effective instrument that improves ground stability and solve complicated geotechnical engineering stable problem.The production method of traditional full-thread bolt mainly is cold rolling and two kinds of methods of hot rolling processing.Direct seamless steel pipe with end intensity carried out mechanical whorl processing after cold-rolling practice will reduce the seamless steel pipe heating anneal intensity, was quenching to improve intensity.The hot rolling method be cored steel behind eddy-current heating, at above-mentioned situation, Hubei Jiayu Pipe Industry Co., Ltd. has researched and developed online hot piercing hot rolling one-shot forming thread hollow anchor stock production new technique, it is compared with traditional production technology, energy consumption reduction by 20%, anchor pole yield strength improve more than 50%, rhythm of production is fast, complete in specifications, have overcome conventional traditional handicraft drawback.
Summary of the invention
For overcome traditional handicraft energy consumption height, efficient is low and the low deficiency of anchor pole yield strength produced, the invention provides a kind of low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt, this anchor pole is by the improvement to technological method for processing, not only reduced energy consumption, enhanced productivity, and made the anchor pole yield strength improve more than 50%.
The technical solution adopted for the present invention to solve the technical problems is: low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt, low-alloy steel bar process Frequency Induction Heating, online hot rolling one-shot forming is a cored steel, and then, utilize waste heat direct rolling and forming screw thread, utilize surplus temperature directly the whole fire of the body of rod to be handled again by the cold mode of control.From the bar to the full-thread bolt, as long as once heating just can all be finished.And traditional mode of production needs at least twice heating just can finish.
The invention has the beneficial effects as follows, from the bar to the full-thread bolt, as long as once heating just can all be finished.Not only energy consumption reduction by 20%, anchor pole yield strength improve more than 50%, and rhythm of production is fast, complete in specifications, has overcome conventional traditional handicraft drawback.
The specific embodiment
Online hot rolling one-shot forming is a cored steel through Frequency Induction Heating low ebb alloy bar, and then, utilizes waste heat direct rolling and forming screw thread, utilizes surplus temperature directly the whole fire of the body of rod to be handled by the cold mode of control again.From the bar to the full-thread bolt, as long as once heating just can all be finished.And traditional mode of production needs at least twice heating just can finish.
Technological process is: the solid steel blanking of low-alloy, and------------sizing (950 ℃-1050 ℃)---rolled threaded (850 ℃-800 ℃)---put in storage by temperature control cooling (normalizing)---antirust processing---in perforation (1120 ℃-1160 ℃) in heating (1120 ℃-1160 ℃) in centering.
Claims (3)
1, low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt, it is characterized in that: low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt, low-alloy steel bar process Frequency Induction Heating, online hot rolling one-shot forming is a cored steel, and then utilize waste heat direct rolling and forming screw thread, utilize surplus temperature directly the whole fire of the body of rod to be handled again by the cold mode of control; From the bar to the full-thread bolt, as long as once heating just can all be finished.
2, a kind of low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt according to claim 1 is characterized in that: " hot piercing-hot rolling method " is its unique production process.
3, a kind of low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt according to claim 1 is characterized in that: " online waste heat is rolled threaded " is the technology of another uniqueness with " normalizing of online waste heat temperature control ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810048151A CN101614014A (en) | 2008-06-24 | 2008-06-24 | Low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810048151A CN101614014A (en) | 2008-06-24 | 2008-06-24 | Low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101614014A true CN101614014A (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810048151A Pending CN101614014A (en) | 2008-06-24 | 2008-06-24 | Low-alloy high-strength hot-pierced and hot-rolled fully-threaded once-formed bolt |
Country Status (1)
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| CN (1) | CN101614014A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562108A (en) * | 2012-01-16 | 2012-07-11 | 成都现代万通锚固技术有限公司 | High-strength and light-duty hollow anchor rod and processing method of hollow anchor rod |
| CN103071679A (en) * | 2011-10-25 | 2013-05-01 | 都江堰市鑫奥岩土锚固材料有限公司 | One-step forming technology of hollow anchor rod |
| CN104174652A (en) * | 2014-07-16 | 2014-12-03 | 洛阳鼎锐材料科技有限公司 | Equipment and technology for piercing and rolling anchor rod integrally |
| CN109022688A (en) * | 2018-08-10 | 2018-12-18 | 杭州市机械科学研究院有限公司 | Hollow bolt processing method and hollow bolt pressure are quenched machine |
-
2008
- 2008-06-24 CN CN200810048151A patent/CN101614014A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071679A (en) * | 2011-10-25 | 2013-05-01 | 都江堰市鑫奥岩土锚固材料有限公司 | One-step forming technology of hollow anchor rod |
| CN102562108A (en) * | 2012-01-16 | 2012-07-11 | 成都现代万通锚固技术有限公司 | High-strength and light-duty hollow anchor rod and processing method of hollow anchor rod |
| CN104174652A (en) * | 2014-07-16 | 2014-12-03 | 洛阳鼎锐材料科技有限公司 | Equipment and technology for piercing and rolling anchor rod integrally |
| CN109022688A (en) * | 2018-08-10 | 2018-12-18 | 杭州市机械科学研究院有限公司 | Hollow bolt processing method and hollow bolt pressure are quenched machine |
| CN109022688B (en) * | 2018-08-10 | 2019-11-22 | 杭州市机械科学研究院有限公司 | Hollow bolt processing method and hollow bolt pressure are quenched machine |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091230 |