CN103028911B - Extrusion forming method of curved-foot connector - Google Patents
Extrusion forming method of curved-foot connector Download PDFInfo
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- CN103028911B CN103028911B CN201210538622.0A CN201210538622A CN103028911B CN 103028911 B CN103028911 B CN 103028911B CN 201210538622 A CN201210538622 A CN 201210538622A CN 103028911 B CN103028911 B CN 103028911B
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- stainless steel
- bent pin
- steel tube
- forming method
- extrusion forming
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- Bending Of Plates, Rods, And Pipes (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention relates to an extrusion forming method of a curved-foot connector, and the method comprises the following steps of step (1), preparing a stainless steel pipe; step (2) annealing the stainless steel pipe in the step (1); step (3) extruding the annealed stainless steel sequentially in different molds to obtain a curved-foot coarse blank; and step (4) rolling, machining and polishing the curved-foot coarse blank to obtain a curved-foot finished product. The extrusion forming method can improve the material utilization rate, the product dimensional precision and the machining quality, can reduce the energy consumption in the machining process and can improve the reliability of a curved foot.
Description
Technical field
The present invention relates to a kind of preparation method of eccentric reducer, be specifically related to a kind of extrusion forming method of bent pin joint.
Background technology
At present, sanitaryware is growing, bent pin is as the key fitment of tap, its quality problems directly affect tap bulk life time, and bent pin plays the effect between connecting pipe and tap, and bent pin is when normal mounting, subject a whole set of leading weight, to contact through expanding with heat and contract with cold for a long time, with alkaline matter and material is oxidized, causing the lost of life of bent pin, thus have influence on the life-span of overall tap.In order to improve intensity and the corrosion resistance of bent pin, in prior art, also have and adopt stainless steel to make bent pin, the casting technique of the bent pin of stainless steel is: die mould manufacture-wax-pattern compacting-wax-pattern assembling-dip-coating material-stucco-sclerosis and drying (repeatedly)-dewaxing-moulding-roasting-burning note-knockout-cleaning, be confined to the defect of technique, there is the defects such as surperficial pockmark, stain, shrinkage depression, depression, oxide burning into sand, island projection in bent pin finished product, not only affect the outward appearance of product, also reduce performance and the yield rate of product.Because the molecular structure of casting finished product own is not compact, tissue looseness, material is impure many, so surface easily occurs local corrosion or rust spot.In addition, the processing technology difficulty of existing bent pin casting method, the bent stiffness of foot in children degree of casting is relatively high, and tool wear is serious, causes price relatively high.Therefore, the shortcoming existed in prior art, is necessary to make improvements prior art.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough, a kind of extrusion forming method that can improve the bent pin joint of serviceability and yield rate is provided, avoid the shortcoming of bent pin employing of the prior art existing for casting method.
The present invention is realized by following technical scheme: a kind of extrusion forming method of bent pin joint, comprises the following steps:
Step (1): preparation stainless steel tube;
Step (2): the stainless steel tube of step (1) is annealed;
Step (3): the stainless steel tube after annealing is extruded successively in multiple different mould, obtains bent pin crude green body;
Step (4): bent pin crude green body is carried out rolled thread respectively, machine adds and polishing, obtain bent pin finished product.
The annealing temperature of described step (2) is 900 DEG C ~ 1000 DEG C, and temperature retention time is 1 hour.
Dwell time during described step (3) extruding is 3 ~ 10 seconds.
Pressing steps in described step (3) comprises:
(1) reducing, carries out reducing by one end of stainless steel tube, obtains reducer pipe;
(2) flatten, design size is flattened at the middle part of reducer pipe;
(3) two ends of the reducer pipe after flattening are carried out reaming, must be arrived the reducer pipe that two ends have design size tubulose connector by reaming;
(4) pressure is eccentric, the reducer pipe with tubulose connector is carried out pressure bias, obtains bent pin crude green body.
Relative to prior art, the present invention is by obtaining bent pin by carrying out extruding to stainless steel tube, and tool has the following advantages:
1, because bent pin is extruded by stainless steel tube to form, integrally formed bent pin avoids that cast article structure is not compact, the shortcoming of tissue looseness, improves the bent pin whole service life of stainless steel and yield rate.
2, the stainless steel tube after Overheating Treatment is more conducive to processing, reduces process tool wearing and tearing.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the structural representation of stainless steel tube in the present invention
Fig. 2 be in the present invention stainless steel tube through the structural representation of reducing
Fig. 3 is the structural representation of stainless steel tube through flattening in the present invention
Fig. 4 be in the present invention stainless steel tube through the structural representation of reaming
Fig. 5 be in the present invention stainless steel tube through the structural representation of overvoltage bias
Fig. 6 is that in the present invention, stainless steel tube adds the structural representation with polishing through rolled thread, machine
Accompanying drawing identifier declaration:
1, stainless steel tube 3, bent pin crude green body
2, screw thread 4, bent pin finished product
Detailed description of the invention
The extrusion forming method of of the present invention a kind of bent pin joint as shown in Figures 1 to 6, comprises the following steps:
Step (1): preparation stainless steel tube 1, as shown in Figure 1;
Step (2): the stainless steel tube 1 of step (1) is annealed;
Step (3): the stainless steel tube 1 after annealing is extruded successively in multiple different mould, obtains bent pin crude green body 3;
Step (4): bent pin crude green body 3 is carried out rolled thread respectively, machine adds and polishing, obtain bent pin finished product 4, the two ends of this bent pin finished product 4 can be processed as the screw thread 2 of different size, as shown in Figure 6.
Wherein, the annealing temperature of step (2) is 900 DEG C ~ 1000 DEG C, and temperature retention time is 1 hour.
Wherein, dwell time during step (3) extruding is 3 ~ 10 seconds.
Wherein, the pressing steps in step (3) comprises:
(1) reducing, carries out reducing by one end of stainless steel tube 1, obtains reducer pipe, as shown in Figure 2;
(2) flatten, design size is flattened at the middle part of reducer pipe, as shown in Figure 3;
(3) two ends of the reducer pipe after flattening are carried out reaming, must be arrived the reducer pipe that two ends have design size tubulose connector, as shown in Figure 4 by reaming;
(4) pressure is eccentric, the reducer pipe with tubulose connector is carried out pressure bias, obtains bent pin crude green body 3, as shown in Figure 5.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or distortion, if these are changed and distortion belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and distortion.
Claims (3)
1. an extrusion forming method for bent pin joint, is characterized in that: comprise the following steps:
Step (1): preparation stainless steel tube;
Step (2): the stainless steel tube of step (1) is annealed;
Step (3): extruded in multiple different mould successively by the stainless steel tube after annealing, described extrusion process comprises the following steps:
A, reducing, carry out reducing by one end of stainless steel tube, obtain reducer pipe;
B, flattening, flatten into design size by the middle part of reducer pipe;
The two ends of the reducer pipe after flattening are carried out reaming, must be arrived the reducer pipe that two ends have design size tubulose connector by C, reaming;
D, pressure are eccentric, the reducer pipe with tubulose connector are carried out pressure bias;
Obtain bent pin crude green body;
Step (4): bent pin crude green body is carried out rolled thread respectively, machine adds and polishing, obtain bent pin finished product.
2. the extrusion forming method of bent pin joint according to claim 1, is characterized in that: the annealing temperature of described step (2) is 900 DEG C ~ 1000 DEG C, and temperature retention time is 1 hour.
3. the extrusion forming method of bent pin joint according to claim 1, is characterized in that: dwell time during described step (3) extruding is 3 ~ 10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538622.0A CN103028911B (en) | 2012-12-11 | 2012-12-11 | Extrusion forming method of curved-foot connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538622.0A CN103028911B (en) | 2012-12-11 | 2012-12-11 | Extrusion forming method of curved-foot connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103028911A CN103028911A (en) | 2013-04-10 |
| CN103028911B true CN103028911B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210538622.0A Expired - Fee Related CN103028911B (en) | 2012-12-11 | 2012-12-11 | Extrusion forming method of curved-foot connector |
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| CN (1) | CN103028911B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312446A (en) * | 2015-06-29 | 2017-01-11 | 梁北洪 | Manufacturing method of S-shaped connector |
| CN111872637A (en) * | 2020-07-22 | 2020-11-03 | 蔡丰良 | Extrusion forming process of stainless steel water warming foot |
| CN114378539A (en) * | 2022-01-18 | 2022-04-22 | 江门市蓬江区弘亮金属制品有限公司 | Processing method of metal curved foot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796861A (en) * | 2004-12-20 | 2006-07-05 | 段焕玉 | Technique for fabricating drainpipe made from stainless steel |
| CN100421873C (en) * | 2006-04-17 | 2008-10-01 | 江苏华阳金属管件有限公司 | Method for forming pipe fittings by cold extrusion |
| CN101274336A (en) * | 2008-05-07 | 2008-10-01 | 杭州泛亚水暖器材有限公司 | Method for producing variable diameter pipe |
| CN101885012A (en) * | 2009-05-14 | 2010-11-17 | 上海华建管件有限公司 | Plastic cold-extrusion technology of using copper pipe to prepare tee tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8468698B2 (en) * | 2009-07-15 | 2013-06-25 | Honda Motor Co., Ltd. | Spinning method |
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2012
- 2012-12-11 CN CN201210538622.0A patent/CN103028911B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796861A (en) * | 2004-12-20 | 2006-07-05 | 段焕玉 | Technique for fabricating drainpipe made from stainless steel |
| CN100421873C (en) * | 2006-04-17 | 2008-10-01 | 江苏华阳金属管件有限公司 | Method for forming pipe fittings by cold extrusion |
| CN101274336A (en) * | 2008-05-07 | 2008-10-01 | 杭州泛亚水暖器材有限公司 | Method for producing variable diameter pipe |
| CN101885012A (en) * | 2009-05-14 | 2010-11-17 | 上海华建管件有限公司 | Plastic cold-extrusion technology of using copper pipe to prepare tee tube |
Non-Patent Citations (1)
| Title |
|---|
| "异径管的热压成型工艺及其质量检测";陈孙艺;《现代制造工程》;20021130(第1期);第91-94页 * |
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| CN103028911A (en) | 2013-04-10 |
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Effective date of registration: 20180829 Address after: 325024 30 street, 143 lane, North Street, Haicheng street, Longwan District, Wenzhou, Zhejiang Patentee after: Zhou Jianbing Address before: 318000 room 2, unit 2, garden new village, Jiaojiang District, Taizhou, Zhejiang, 402. Patentee before: Luo Weiming |
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