CN1280047A - Process for upsetting and rolling thread of steel bar joint - Google Patents
Process for upsetting and rolling thread of steel bar joint 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
- Authority
- CN
- China
- Prior art keywords
- steel bar
- rolling
- upsetting
- screw thread
- thread
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000005096 rolling process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007514 turning Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 239000010953 base metal Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
A process for upsetting and rolling the thread of reinforcing bar joint features that the diameter of base metal is decreased by turning or rolling the end of reinforcing bar with original diameter, resulting in low comprehensive mechanical performance. It is characterized by that firstly, the ends of reinforcing bar are upset, then the screw threads are rolled on the ends of reinforcing bar, finally the two ends of reinforcing bar are screw-connected by means of sleeve containing screw threads. The fiber structure and the diameter of the steel bar are not damaged or reduced, so that the comprehensive mechanical property of the joint is higher than that of the base material. Can be used for connecting reinforcing steel bars, in particular to connecting reinforcing steel bars in the building industry.
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 | Process for upsetting and rolling thread of steel bar joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115032 CN1280047A (en) | 1999-07-10 | 1999-07-10 | Process for upsetting and rolling thread of steel bar joint |
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 | Process for upsetting and rolling thread of steel bar joint |
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 |