CN103506425A - Preparation method of square steel pipes with different wall thicknesses - Google Patents
Preparation method of square steel pipes with different wall thicknesses Download PDFInfo
- Publication number
- CN103506425A CN103506425A CN201310480613.5A CN201310480613A CN103506425A CN 103506425 A CN103506425 A CN 103506425A CN 201310480613 A CN201310480613 A CN 201310480613A CN 103506425 A CN103506425 A CN 103506425A
- Authority
- CN
- China
- Prior art keywords
- square steel
- adopting
- steel pipes
- preparation
- square
- 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
Images
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a preparation method of square steel pipes with different wall thicknesses. The method is characterized by comprising the following steps: 1, rolling a steel billet into sheets with different sections by adopting a TMCP (thermo-mechanical control process) heat machine, wherein side edge thick plates are symmetrically arranged on the steel billet; 2, forming C-shaped sections with unequal sections by adopting a hot pressing die or adopting a rolling manner; 3, carrying out square tube forming on the C-shaped sections; 4, adopting an electric resistance welding or submerged-arc welding process to weld the C-shaped sections formed by rolling; and 5, carrying out fine fixed-length straightening and calibration and carrying out ex-warehouse of finished products. The square steel pipes with different wall thicknesses, which are prepared by adopting the preparation method, adopt a simple manufacturing process and have low cost. The square steel pipes are made into a trolley square box and after equipment is invested, monthly output can reach mass production; labor intensity of workers is reduced; manufacturing cost can be greatly reduced; for a single bulldozer, benefits are increased by 2,000 to 3,000 RMB; 20 thousands to 30 thousands of bulldozers are produced per year in China, so that the square steel pipes have wide market prospect.
Description
Technical field
The present invention relates to a kind of forming method of steel pipe, the preparation method of a kind of different wall side of special design square steel pipe.
Background technology
Chassis square box is the vitals of chassis of bulldozer, existing finished product is four block plate welding, complex forming technology, steel pipe needs milling limit, frock, welding, and the feature of its defect is: finished product has four weld seams, long processing time, labour intensity is large, under efficiency, cost is high, is the serious bottleneck of producing bull-dozer output.
Summary of the invention
For the deficiencies in the prior art, the inventor provides the preparation method of a kind of low cost of manufacture, the simple different wall side of technique square steel pipe.
Object of the present invention can realize by following technical scheme:
A preparation method for different wall side's square steel pipe, is characterized in that comprising the steps:
1) adopt TMCP thermal mechanical rolling billet rolling to be become to the sheet material of different cross section; On described steel billet, be arranged with side slab;
2) adopt hot-die moulding, become C type or the employing of unequal section to be rolled into C type;
3) C type is carried out to square tube moulding;
4) adopt electric resistance welding or submerged welding process that the C section bar of roll-forming is welded;
5) smart scale aligning is proofreaied and correct, finished product outbound.
The present invention with respect to the beneficial effect of prior art is: adopt different wall side's square steel pipe of preparation of the present invention, manufacturing process is simple, cost is low.By the party's square steel pipe manufacturing chassis square box, after equipment investment, a month production capacity reaches mass, and labor strength reduces, and can significantly reduce manufacturing cost, 2000 yuan-3000 yuan of separate unit bull-dozer synergy, domestic annual output 20000-30,000 bull-dozer, good market prospects.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further detailed
Accompanying drawing 1 is the structural representation of the steel billet of different wall side of the present invention square steel pipe;
Accompanying drawing 2 is schematic diagrames of the forming process of different wall side of the present invention square steel pipe;
Accompanying drawing 3 is structural representations of different wall side of the present invention square steel pipe.
The specific embodiment
With specific embodiment, the present invention is described in detail below, but be not limited to this.
embodiment 1:
A preparation method for different wall side's square steel pipe, is characterized in that comprising the steps:
1) adopt TMCP thermal mechanical rolling billet rolling to be become to the sheet material of different cross section; Make approximately 800 tons of left and right of pressure, on described steel billet, be arranged with side slab;
2) adopt hot-die moulding, temperature approximately 800 degree-930 degree, C type or the employing of making unequal section are rolled into C type;
3) C type is carried out to square tube moulding; Adopt roller to drive or hydraulic-driven shaping machine set, unit adapted 500 kilowatt motor power;
4) adopt resistance-welding process that the C section bar of roll-forming is welded;
5) smart scale aligning is proofreaied and correct, finished product outbound.
embodiment 2:
A preparation method for different wall side's square steel pipe, is characterized in that comprising the steps:
1) adopt TMCP thermal mechanical rolling billet rolling to be become to the sheet material of different cross section; Make approximately 800 tons of left and right of pressure, on described steel billet, be arranged with side slab;
2) adopt hot-die moulding, temperature approximately 800 degree-930 degree, C type or the employing of making unequal section are rolled into C type;
3) C type is carried out to square tube moulding; Adopt roller to drive or hydraulic-driven shaping machine set, unit adapted 500 kilowatt motor power;
4) adopt submerged welding process that the C section bar of roll-forming is welded;
5) smart scale aligning is proofreaied and correct, finished product outbound.
Adopt the technical essential of product of the square square steel pipe of above-mentioned preparation:
1) the different ，Si Ge of same square tube wall thickness limit portion, sectional area is different;
2) finished product only has a weld seam;
3) concrete angle and dimensions, negotiable customized;
4) adopt TMCP thermal mechanical rolling process.
Claims (1)
1. a preparation method for different wall side's square steel pipe, is characterized in that comprising the steps:
1) adopt TMCP thermal mechanical rolling billet rolling to be become to the sheet material of different cross section; On described steel billet, be arranged with side slab;
2) adopt hot-die moulding, become C type or the employing of unequal section to be rolled into C type;
3) C type is carried out to square tube moulding;
4) adopt electric resistance welding or submerged welding process that the C section bar of roll-forming is welded;
5) smart scale aligning is proofreaied and correct, finished product outbound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310480613.5A CN103506425A (en) | 2013-10-15 | 2013-10-15 | Preparation method of square steel pipes with different wall thicknesses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310480613.5A CN103506425A (en) | 2013-10-15 | 2013-10-15 | Preparation method of square steel pipes with different wall thicknesses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103506425A true CN103506425A (en) | 2014-01-15 |
Family
ID=49890153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310480613.5A Pending CN103506425A (en) | 2013-10-15 | 2013-10-15 | Preparation method of square steel pipes with different wall thicknesses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103506425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118232A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2085829A (en) * | 1935-05-08 | 1937-07-06 | Harry E Rogers | Method of making beams |
| EP0133705A1 (en) * | 1983-08-11 | 1985-03-06 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
| CN1280119C (en) * | 2001-12-06 | 2006-10-18 | 施珀公司 | Variable thickness tubular doorbeam |
-
2013
- 2013-10-15 CN CN201310480613.5A patent/CN103506425A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2085829A (en) * | 1935-05-08 | 1937-07-06 | Harry E Rogers | Method of making beams |
| EP0133705A1 (en) * | 1983-08-11 | 1985-03-06 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
| CN1280119C (en) * | 2001-12-06 | 2006-10-18 | 施珀公司 | Variable thickness tubular doorbeam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118232A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103233190B (en) | Method for preparing semisolid blank | |
| CN102218642B (en) | Manufacturing method of thick wall steel pipe with small radius-thickness ratio used for building structure | |
| CN104308057B (en) | A kind of long thin plate class complex die forging loose tooling forging base manufacturing process | |
| CN103273272A (en) | Forging-and-rolling compounded forming method for comprehensively promoting internal and external quality of wide and thick plate blanks | |
| CN102649123B (en) | Method for producing extra thick composite board through dissymmetrical composite rolling | |
| CN103286527A (en) | Production process for extra-large aperture super wall thickness square steel pipe | |
| CN100493821C (en) | Manufacturing method of the coupler yoke for railway wagon | |
| CN103394881A (en) | Novel hot extrusion tee joint forming process | |
| CN102974988A (en) | Drum coiling and forming method based on spin forming blank manufacture | |
| CN102059272A (en) | Method for horizontal continuous casting, Pilger rolling and continuous drawing of copper alloy condenser tube | |
| CN103506425A (en) | Preparation method of square steel pipes with different wall thicknesses | |
| CN103121047B (en) | Roll bending welds the method that C.P.Ti tube is made in compacting of putting english | |
| CN104801578A (en) | Bending method for three-roller plate bending machine | |
| CN203938959U (en) | One does not wait wall thickness hot rolling U rib steel | |
| CN105414432A (en) | Radial forging machine of rectangular forged piece | |
| CN105344906A (en) | Forging process of radial forging machine for rectangular forge piece | |
| CN104815881A (en) | Bending method for three-roller plate bending machine | |
| CN214160876U (en) | Device for manufacturing special-shaped steel by local heating and cold bending forming | |
| CN205254535U (en) | Dual -purpose continuous production transversal joint submerged arc weld pipe's of slab band production facility | |
| CN203936191U (en) | A kind of novel culvert corrugated steel punch | |
| CN210566912U (en) | Butt welding eccentric reducing elbow used at industrial pipeline turning position and production device thereof | |
| CN204817547U (en) | H shaped steel edge of a wing correcting unit | |
| CN103191953A (en) | Manufacture method of seamless steel tube by using stainless welded tube | |
| CN209520254U (en) | A kind of tube press machine | |
| CN205217889U (en) | Machine is forged in footpath of rectangle forging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140115 |