CN1280047A - Technological method for upsetting and rolling steel bar joint screw thread - Google Patents
Technological method for upsetting and rolling steel bar joint screw thread Download PDFInfo
- Publication number
- CN1280047A CN1280047A CN 99115032 CN99115032A CN1280047A CN 1280047 A CN1280047 A CN 1280047A CN 99115032 CN99115032 CN 99115032 CN 99115032 A CN99115032 A CN 99115032A CN 1280047 A CN1280047 A CN 1280047A
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- CN
- China
- Prior art keywords
- steel bar
- screw thread
- upsetting
- rolling
- technological method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Reinforcement Elements For Buildings (AREA)
Abstract
Unlike the available technology which turns or rolls screw thread directly on original steel bar diameter and leads to reduced diameter and reduced comprehensive mechanical property of the mother material, the present invention features the end upsetting of steel bar before rolling screw thread and the connection of steel bars through inner threaded sleeve. Because of the undamaged inner fibrous texture and the unreduced diameter of the steel bar, the joint has comprehensive mechanical performance higher than the mother material. The method may be used in connecting steel bar, especially those for building engineering.
Description
The present invention is a kind of method with the special metal of milling method manufacturing, particularly a kind of technological method for upsetting and rolling steel bar joint screw thread.
Prior art is in original diameter steel bar end car system or rail system in the method for steel bar end machining screw.Its weak point is and then to reduce its bearing capacity, stress performance and fatigue behaviour at original diameter system of getting on the bus or the rolling diameter that certainly will reduce mother metal, makes engineering have potential hidden danger.Owing to destroyed the fibr tissue of reinforcing bar, also there is above-mentioned weak point in driving system again behind the steel bar end jumping-up.
The objective of the invention is to solve above-mentioned weak point of the prior art, and a kind of technological method for upsetting and rolling steel bar joint screw thread is provided.
Technical solution of the present invention is: with the steel bar end jumping-up of desire processing, hot and cold rammer all can, the turning levelling, if the steel bar end diameter behind the jumping-up evenly not car also can, place on the screw-rolling machine rolled threaded then in its termination.But this screw thread straight thread, taper thread or other screw thread.With the sleeve that contains internal thread two steel bar ends are spirally connected at last and get final product.
The advantage that the present invention is had compared to existing technology is: because the internal fiber tissue of reinforcing bar and diameter thereof all do not go to pot or dwindle, make the comprehensive mechanical performance of joint be higher than mother metal.
Most preferred embodiment of the present invention is identical with technical solution one joint, the Therefore, omited.Can supply connecting reinforcement, especially the building trade connecting reinforcement is used.
Claims (4)
1, a kind of technological method for upsetting and rolling steel bar joint screw thread, comprise jumping-up, car system, rolling, it is characterized in that steel bar end jumping-up, the turning levelling desire processing, place on the screw-rolling machine rolled threadedly then, with the sleeve that contains internal thread two steel bar ends are spirally connected at last in its termination.
2, according to the technological method for upsetting and rolling steel bar joint screw thread described in the claim 1, it is characterized in that described jumping-up hot and cold rammer all can.
3, according to the screw thread process of the upsetting and rolling steel bar joint described in the claim 1, it is characterized in that described turning levelling, if jumping-up after the steel bar end diameter evenly not car also can.
4, according to the technological method for upsetting and rolling steel bar joint screw thread described in the claim 1, but it is characterized in that rolling screw thread straight thread, taper thread or other screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115032 CN1280047A (en) | 1999-07-10 | 1999-07-10 | Technological method for upsetting and rolling steel bar joint screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115032 CN1280047A (en) | 1999-07-10 | 1999-07-10 | Technological method for upsetting and rolling steel bar joint screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1280047A true CN1280047A (en) | 2001-01-17 |
Family
ID=5278053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115032 Pending CN1280047A (en) | 1999-07-10 | 1999-07-10 | Technological method for upsetting and rolling steel bar joint screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1280047A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191177A (en) * | 2014-08-25 | 2014-12-10 | 苏州第五建筑集团有限公司 | Hot heading straight thread rebar and production device and production technology thereof |
| CN106363360A (en) * | 2016-11-03 | 2017-02-01 | 山西太钢不锈钢股份有限公司 | Method for processing threads on ends of stainless steel bar |
-
1999
- 1999-07-10 CN CN 99115032 patent/CN1280047A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191177A (en) * | 2014-08-25 | 2014-12-10 | 苏州第五建筑集团有限公司 | Hot heading straight thread rebar and production device and production technology thereof |
| CN104191177B (en) * | 2014-08-25 | 2016-06-29 | 苏州第五建筑集团有限公司 | A kind of hot pier straight thread reinforced bar and process units thereof and production technology |
| CN106363360A (en) * | 2016-11-03 | 2017-02-01 | 山西太钢不锈钢股份有限公司 | Method for processing threads on ends of stainless steel bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |