CN104841792A - Molding process of reverse cylinder workpiece having flange at end - Google Patents
Molding process of reverse cylinder workpiece having flange at end Download PDFInfo
- Publication number
- CN104841792A CN104841792A CN201410053105.3A CN201410053105A CN104841792A CN 104841792 A CN104841792 A CN 104841792A CN 201410053105 A CN201410053105 A CN 201410053105A CN 104841792 A CN104841792 A CN 104841792A
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- workpiece
- flange
- blank
- extrusion
- deep hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/03—Making uncoated products by both direct and backward extrusion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a molding process of a reverse cylinder workpiece having a flange at an end. Firstly, a steel ingot is blanked; then, a blank is put in a heating furnace with the furnace temperature lower than 700 DEG C for heating; firstly, the temperature is heated up to 750-850 DEG C for keeping 45-90 min; then, the heating furnace heats up to a temperature of 1170-1190 DEG C with full power for keeping 70-90 min, and the temperature is cooled above 850 DEG C; then, a mold is preheated up to a temperature of 250-350 DEGC; the blank is put into a lower mold for forwards extruding to mold the flange after being descaled; then, the workpiece is reversely extruded step by step to mold a deep hole of an oil cylinder; and finally, the workpiece is taken out from the lower mold, and the mold is cooled. The molding process adopts a mode of combining the forward extrusion with the reverse extrusion to process the reverse cylinder workpiece having the flange at the end, so that the material is saved about 40%, the production cost is largely reduced, the production efficiency is improved, the grain size grade is high, the metal streamline is smooth, and the product has higher fatigue resistance and high tensile strength.
Description
Technical field
The present invention relates to a kind of metal working process method, particularly the anti-workpiece for barrel moulding process of a kind of end belt flange.
Background technology
The anti-workpiece for barrel traditional molding methods of end belt flange is: first carry out open die forging and be processed into semi-finished product (forging molding of flange), then adopt mach mode deep hole processing, this kind of processing mode stock utilization is low, and production efficiency is low, labour intensity is large, and quality control is difficult.
Summary of the invention
In order to make up above deficiency, the invention provides the anti-workpiece for barrel moulding process of a kind of end belt flange, adopting the end of this technological forming flanged (FLGD) workpiece for barrel precision high, without the need to follow-up machined, save raw material, whole workpiece performance is good, and intensity is high.
The present invention in order to the technical scheme solving its technical problem and adopt is: the anti-workpiece for barrel moulding process of a kind of end belt flange, and its technological process is as follows:
Step one: steel ingot blanking;
Step 2: blank heating: blank is put into furnace temperature and heat lower than the heating furnace of 700 DEG C, be first heated to 750-850 DEG C, insulation 45-90min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 70-90min;
Step 3: mould and die preheating:
By mould and die preheating to 250 DEG C ~ 350 DEG C;
Step 4: blank descales;
Step 5: extruded
A. flange forming: blank is put into counterdie, utilize upsetting flange mold to carry out forward extrusion to blank, extrusion billet makes flange forming;
B. oil cylinder deep hole forming: upsetting flange patrix is replaced by extrusion deep hole patrix drift, substep backward extrusion workpiece, oil cylinder deep hole forming;
C. workpiece is taken out in counterdie;
D. cooling die.
As a further improvement on the present invention, described step 5 oil cylinder deep hole forming step divides five step anti-extrusions.
As a further improvement on the present invention, in described step 5 oil cylinder deep hole forming step, each time after backward extrusion, cooling is carried out to extrusion deep hole patrix and in the endoporus of workpiece, adds sawdust graphite powder simultaneously, and then carry out backward extrusion next time.
As a further improvement on the present invention, described mould and die preheating is put into blank again after lubricating mould after completing and is carried out extruded.
As a further improvement on the present invention, in step 2 in blank heating step, be first heated to 800 DEG C, insulation 60min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 80min.
Advantageous Effects of the present invention is: the mode that the present invention adopts forward extrusion and backward extrusion to combine is to process the anti-workpiece for barrel of end belt flange, save material about 40%, greatly reduce production cost, enhance productivity, grain size number is high, metal streamline is smooth and easy, and product has higher fatigue resistance, high-tensile.
Accompanying drawing explanation
Fig. 1 is the anti-workpiece for barrel structural representation of end belt flange;
Fig. 2 is the blank schematic diagram through step one blanking of the present invention;
Fig. 3 is forward extrusion state principle figure of the present invention;
Fig. 4 is backward extrusion state principle figure of the present invention.
Detailed description of the invention
Embodiment: the anti-workpiece for barrel moulding process of a kind of end belt flange, its technological process is as follows:
Step one: steel ingot blanking;
Step 2: blank heating: blank is put into furnace temperature and heat lower than the heating furnace of 700 DEG C, be first heated to 750-850 DEG C, insulation 45-90min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 70-90min;
Step 3: mould and die preheating:
By mould and die preheating to 250 DEG C ~ 350 DEG C;
Step 4: blank descales;
Step 5: extruded:
A. flange forming: blank is put into counterdie 4, utilize upsetting flange mold 2 pairs of blanks to carry out forward extrusion, extrusion billet makes flange forming;
B. oil cylinder deep hole forming: upsetting flange patrix is replaced by extrusion deep hole patrix drift 3, substep backward extrusion workpiece, oil cylinder deep hole forming;
C. workpiece 1 is taken out in counterdie;
D. cooling die.
Described step 5 oil cylinder deep hole forming step divides five step anti-extrusions.
In described step 5 oil cylinder deep hole forming step, each time after backward extrusion, cooling is carried out to extrusion deep hole patrix and in the endoporus of workpiece, adds sawdust graphite powder simultaneously, and then carry out backward extrusion next time.
Putting into blank after lubricating mould after described mould and die preheating completes again carries out extruded.
In step 2 in blank heating step, be first heated to 800 DEG C, insulation 60min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 80min.
Claims (5)
1. the anti-workpiece for barrel moulding process of end belt flange, its technological process is as follows:
Step one: steel ingot blanking;
Step 2: blank heating: blank is put into furnace temperature and heat lower than the heating furnace of 700 DEG C, be first heated to 750-850 DEG C, insulation 45-90min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 70-90min;
It is characterized by: further comprising the steps of:
Step 3: mould and die preheating:
By mould and die preheating to 250 DEG C ~ 350 DEG C;
Step 4: blank descales;
Step 5: extruded
A. flange forming: blank is put into counterdie (4), utilize upsetting flange mold (2) to carry out forward extrusion to blank, extrusion billet makes flange forming;
B. oil cylinder deep hole forming: upsetting flange patrix is replaced by extrusion deep hole patrix drift (3), substep backward extrusion workpiece, oil cylinder deep hole forming;
C. workpiece (1) is taken out in counterdie;
D. cooling die.
2. the anti-workpiece for barrel moulding process of end belt flange as claimed in claim 1, is characterized in that: described step 5 oil cylinder deep hole forming step divides five step anti-extrusions.
3. the anti-workpiece for barrel moulding process of end belt flange as claimed in claim 2, it is characterized in that: in described step 5 oil cylinder deep hole forming step, each time after backward extrusion, cooling is carried out to extrusion deep hole patrix and in the endoporus of workpiece, adds sawdust graphite powder simultaneously, and then carry out backward extrusion next time.
4. the anti-workpiece for barrel moulding process of end belt flange as claimed in claim 2, is characterized in that: put into blank after lubricating mould after described mould and die preheating completes again and carry out extruded.
5. the anti-workpiece for barrel moulding process of end belt flange as claimed in claim 1, it is characterized in that: in step 2 in blank heating step, be first heated to 800 DEG C, insulation 60min, then heating furnace heating with full power is to 1170 DEG C-1190 DEG C, is cooled to more than 850 DEG C after insulation 80min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053105.3A CN104841792A (en) | 2014-02-17 | 2014-02-17 | Molding process of reverse cylinder workpiece having flange at end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053105.3A CN104841792A (en) | 2014-02-17 | 2014-02-17 | Molding process of reverse cylinder workpiece having flange at end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104841792A true CN104841792A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053105.3A Pending CN104841792A (en) | 2014-02-17 | 2014-02-17 | Molding process of reverse cylinder workpiece having flange at end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104841792A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081704A (en) * | 2015-09-16 | 2015-11-25 | 马鞍山市安工大工业技术研究院有限公司 | Method for manufacturing pressing oil cylinder body of plate shearing machine |
| CN105171365A (en) * | 2015-09-29 | 2015-12-23 | 陕西法士特齿轮有限责任公司 | Deep cavity thin-wall flange piece composite forging molding method |
| CN106583485A (en) * | 2016-12-22 | 2017-04-26 | 南昌工程学院 | Forming method for large-diameter flange air cylinder |
| CN107470532A (en) * | 2017-08-11 | 2017-12-15 | 徐州东力锻压机械有限公司 | A kind of hydraulic press cylinder cylinder body forging technology |
| CN114406166A (en) * | 2021-12-31 | 2022-04-29 | 铭昊汽车金属零部件(广州)有限公司 | Square rod with circular flange and manufacturing method thereof |
| CN115446242A (en) * | 2022-09-05 | 2022-12-09 | 中国第一重型机械股份公司 | Ultra-large fan shaft forging die and forging method |
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| JPH1024342A (en) * | 1996-07-08 | 1998-01-27 | Toto Ltd | Manufacture of faucet metallic tool part by cold forging and faucet metallic tool part manufactured thereby |
| JP2001038447A (en) * | 1999-07-29 | 2001-02-13 | Sumitomo Heavy Ind Ltd | Molding method of cylindrical forging having bottom and convex part on side |
| CN101934297A (en) * | 2009-07-01 | 2011-01-05 | 哈尔滨建成集团有限公司 | Suspended hot extrusion forming method for blanks |
| CN102303090A (en) * | 2011-08-23 | 2012-01-04 | 江苏大学 | Device and method for compounding and forming central flange pipe joint from pipe blank in single-step and multi-directional way |
| CN102554090A (en) * | 2012-02-17 | 2012-07-11 | 四川新筑精坯锻造有限公司 | Forging method for forming through holes of working clamping plates by hot extrusion |
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| CN103394869A (en) * | 2013-07-12 | 2013-11-20 | 江苏威鹰机械有限公司 | Precision forging plastic forming process of power take-off device flange shaft |
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2014
- 2014-02-17 CN CN201410053105.3A patent/CN104841792A/en active Pending
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| JPH1024342A (en) * | 1996-07-08 | 1998-01-27 | Toto Ltd | Manufacture of faucet metallic tool part by cold forging and faucet metallic tool part manufactured thereby |
| JP2001038447A (en) * | 1999-07-29 | 2001-02-13 | Sumitomo Heavy Ind Ltd | Molding method of cylindrical forging having bottom and convex part on side |
| CN101934297A (en) * | 2009-07-01 | 2011-01-05 | 哈尔滨建成集团有限公司 | Suspended hot extrusion forming method for blanks |
| CN102303090A (en) * | 2011-08-23 | 2012-01-04 | 江苏大学 | Device and method for compounding and forming central flange pipe joint from pipe blank in single-step and multi-directional way |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081704A (en) * | 2015-09-16 | 2015-11-25 | 马鞍山市安工大工业技术研究院有限公司 | Method for manufacturing pressing oil cylinder body of plate shearing machine |
| CN105171365A (en) * | 2015-09-29 | 2015-12-23 | 陕西法士特齿轮有限责任公司 | Deep cavity thin-wall flange piece composite forging molding method |
| CN106583485A (en) * | 2016-12-22 | 2017-04-26 | 南昌工程学院 | Forming method for large-diameter flange air cylinder |
| CN107470532A (en) * | 2017-08-11 | 2017-12-15 | 徐州东力锻压机械有限公司 | A kind of hydraulic press cylinder cylinder body forging technology |
| CN114406166A (en) * | 2021-12-31 | 2022-04-29 | 铭昊汽车金属零部件(广州)有限公司 | Square rod with circular flange and manufacturing method thereof |
| CN114406166B (en) * | 2021-12-31 | 2024-03-12 | 铭昊汽车金属零部件(广州)有限公司 | Square rod with round flange and manufacturing method thereof |
| CN115446242A (en) * | 2022-09-05 | 2022-12-09 | 中国第一重型机械股份公司 | Ultra-large fan shaft forging die and forging method |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150819 |