CN109648266A - A kind of rectangle adjusting nut processing technology - Google Patents
A kind of rectangle adjusting nut processing technology Download PDFInfo
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- CN109648266A CN109648266A CN201811634586.1A CN201811634586A CN109648266A CN 109648266 A CN109648266 A CN 109648266A CN 201811634586 A CN201811634586 A CN 201811634586A CN 109648266 A CN109648266 A CN 109648266A
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- Prior art keywords
- adjusting nut
- processing technology
- nut processing
- rectangle adjusting
- diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of rectangle adjusting nut processing technologys.The adjusting nut processing technology, including (1) by 304 hot-rolled stainless steel poles through solution treatment；(2) by the pole after step (1) solution treatment through preliminary forging rolling at the class square strip close to final finished；(3) the class square strip that step (2) obtains is drawn to finished product nut cross-sectional sizes.The rectangle adjusting nut processing technology devises solution treatment, preliminary forging rolling, the molding process of drawing, keeps material structure uniform by solution heat treatment, eliminates machining stress, improves material comprehensive performance；It for the stability for improving drawing process, first carries out preliminary forging rolling and obtains class square strip, tentatively raising intensity, be convenient for subsequent fine pulling shaping；Accurate outer dimension is obtained by drawing, improves surface smoothness, while obtaining preferable surface quality, it is accurate to control drawing draft, reach desired product strength and hardness.
Description
Technical field
The present invention relates to a kind of rectangle adjusting nut processing technologys.
Background technique
When the section of the tunnel space Deng You limitation is crossed by Tie Tong at high speed, rigid contact net electricity need to be designed to reduce installation space
Gas hanging bracket, since high speed Metro Design speed per hour is high, it is desirable that the intensity of hanging bracket is high, dimensional accuracy is high, reliability of service life
It is high.For example, the rectangle adjusting nut used in the electrical hanging bracket process of construction of rigid contact net needs product tensile strength
Reach 820MPa.Currently, the method for processing this class rectangle adjusting nut is that 304 stainless steel round bar are carried out to the conventional machine such as turning to add
Tapping, drilling after work, and 304 stainless steels not can be carried out heat treatment and improve intensity, although institute can also produce symbol in this way
The rectangle adjusting nut that size requires is closed, but intensity highest only has 650MPa, does not reach requirement, and production efficiency is especially low,
Dimensional uniformity is poor.Therefore, the present invention is intended to provide a kind of rectangle adjusting nut processing technology solves problem above.
Summary of the invention
The present invention provides a kind of high production efficiency, the satisfactory rectangle adjusting nut processing technology of product strength, solutions
It has determined problems of the prior art.
Used technical solution is the present invention to solve above-mentioned technical problem:
A kind of rectangle adjusting nut processing technology, includes the following steps:
(1) keep material structure uniform through solution treatment 304 hot-rolled stainless steel poles；
(2) by the pole after step (1) solution treatment through preliminary forging rolling at the class square strip close to final finished；
(3) the class square strip that step (2) obtains is drawn to finished product nut cross-sectional sizes；
(4) finished product rectangle adjusting nut is obtained according to length requirement progress sawing, tapping, punching.
Preferably, solution treatment described in step (1) method particularly includes: be warming up at 500-520 DEG C and keep the temperature 3.2-3.4
Hour, it is warming up at 860-880 DEG C and keeps the temperature 2.2-2.4 hours, be warming up at 1050-1150 DEG C and keep the temperature 1.8-2.2 hours, then
Water cooling is to room temperature.
Preferably, total draft calculation formula of the stainless steel round bar to finished product nut are as follows:
Preferably, forging rolling temperature is 880-920 DEG C in step (2).
Preferably, the draft of forging rolling process is 60-64% in step (2).
Preferably, the draft of drawing procedure is 14-18% in step (3).
The wire drawing die used when drawing in step (3) includes entrance region, diameter reducing area, calibrating strap and outlet area, wherein
Entrance region is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 22-27mm, cone angle
It is 58-62 °；
Diameter reducing area is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 18-22mm, cone angle
It is 20-24 °；
Calibrating strap cross sectional shape is finished product nut shape；
Outlet area is the horn-like of four plane compositions, and point diameter is less than rear end diameter, length 23-27mm, cone angle
It is 28-32 °；
Entrance region, diameter reducing area, calibrating strap, outlet area four planes be successively mutually linked.
Preferably, the front-end and back-end of wire drawing die are respectively equipped with chamfering.
The present invention using the above structure, has the advantage that
To guarantee the dimensional accuracy of product, corrosion resisting property and uniform flawless structure property, solution treatment, just is devised
Forging rolling, the molding process of drawing are walked, keeps material structure uniform by solution heat treatment, eliminates machining stress, improves material
Comprehensive performance；It for the stability for improving drawing process, first carries out preliminary forging rolling and obtains class square strip, tentatively raising intensity, be convenient for
Subsequent fine pulling shaping；Accurate outer dimension is obtained by drawing, improves surface smoothness, while obtaining preferable surface matter
Amount, it is accurate to control drawing draft, reach desired product strength and hardness.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram of rectangle adjusting nut of the present invention；
Fig. 2 is the cross section structure schematic diagram of 304 hot-rolled stainless steel poles in the present invention；
Fig. 3 is the cross section structure schematic diagram for the class square strip that preliminary forging rolling obtains in the present invention；
Fig. 4 is the side structure schematic view of rectangle adjusting nut in the present invention；
Fig. 5 is the structural schematic diagram of wire drawing die in the present invention.
In figure, 1, entrance region, 2, diameter reducing area, 3, calibrating strap, 4, outlet area.
Specific embodiment:
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.
The strain hardening coefficient of 304 stainless steel round bar is about 1.2, and total draft of stainless steel round bar to finished product nut should expire
Foot:
Current embodiment require that the section of obtained rectangle adjusting nut is (30 ± 0.02) mm × (35 ± 0.02) mm, use
304 stainless steel round bar of raw material sectional dimension be 65mm, be machined to finished product rectangular nut total draft be 16% or so.
As shown in Fig. 1-Fig. 5, the present embodiment rectangle adjusting nut processing technology includes the following steps:
(1) keep material structure uniform through solution treatment 304 hot-rolled stainless steel poles, solution treatment method particularly includes:
It is warming up at 500-520 DEG C and keeps the temperature 3.2-3.4 hours, be warming up at 860-880 DEG C and keep the temperature 2.2-2.4 hours, be warming up to 1050-
1.8-2.2 hours are kept the temperature at 1150 DEG C, then water cooling to room temperature；
(2) by the pole after step (1) solution treatment through preliminary forging rolling at the class square strip close to final finished, forging rolling
Temperature is 880-920 DEG C, and the draft of forging rolling process is about 62%；
(3) the class square strip that step (2) obtains is drawn to finished product nut cross-sectional sizes, compared with class square strip,
The draft of drawing procedure is about 16%；
(4) finished product rectangle adjusting nut is obtained according to length requirement progress sawing, tapping, punching.
The wire drawing die used when drawing in step (3) includes entrance region, diameter reducing area, calibrating strap and outlet area, wherein
Entrance region is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 25mm, and cone angle is
60°；
Diameter reducing area is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 20mm, and cone angle is
22°；
Calibrating strap cross sectional shape is finished product nut shape；
Outlet area is the horn-like of four plane compositions, and point diameter is less than rear end diameter, length 25mm, and cone angle is
30°；
Entrance region, diameter reducing area, calibrating strap, outlet area four planes be successively mutually linked.
Preferably, the front-end and back-end of wire drawing die are respectively equipped with chamfering.
Rectangle adjusting nut product of the present invention is through penetrating inspection, ultrasonic inspection, visual and dimension control, product
With high corrosion resistance, high surface finish, high outer dimension precision, structure property uniformity zero defect, properties ginseng
Number fully meets requirement.Specifically, tensile strength reaches 820MPa, surface smoothness reaches Ra1.6-Ra0.8, and screw thread guarantee is answered
800 or more power, grain size improve about 4 grades.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art
For member, any alternate modification or transformation made to embodiment of the present invention are fallen within the scope of protection of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (8)
1. a kind of rectangle adjusting nut processing technology, characterized by the following steps:
(1) keep material structure uniform through solution treatment 304 hot-rolled stainless steel poles；
(2) by the pole after step (1) solution treatment through preliminary forging rolling at the class square strip close to final finished；
(3) the class square strip that step (2) obtains is drawn to finished product nut cross-sectional sizes；
(4) finished product rectangle adjusting nut is obtained according to length requirement progress sawing, tapping, punching.
2. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: at solid solution described in step (1)
Reason method particularly includes: be warming up at 500-520 DEG C and keep the temperature 3.2-3.4 hours, be warming up at 860-880 DEG C and keep the temperature 2.2-2.4
Hour, it is warming up at 1050-1150 DEG C and keeps the temperature 1.8-2.2 hours, then water cooling to room temperature.
3. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: stainless steel round bar to finished product nut
Total draft calculation formula are as follows:
4. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: forging rolling temperature is in step (2)
880-920℃。
5. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: forging rolling process in step (2)
Draft is 60-64%.
6. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: drawing procedure in step (3)
Draft is 14-18%.
7. rectangle adjusting nut processing technology according to claim 1, it is characterised in that: used when drawing in step (3)
Wire drawing die include entrance region, diameter reducing area, calibrating strap and outlet area, wherein
Entrance region is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 22-27mm, cone angle 58-
62°；
Diameter reducing area is the horn-like of four plane compositions, and point diameter is greater than rear end diameter, length 18-22mm, cone angle 20-
24°；
Calibrating strap cross sectional shape is finished product nut shape；
Outlet area is the horn-like of four plane compositions, and point diameter is less than rear end diameter, length 23-27mm, cone angle 28-
32°；
Entrance region, diameter reducing area, calibrating strap, outlet area four planes be successively mutually linked.
8. rectangle adjusting nut processing technology according to claim 7, it is characterised in that: the front-end and back-end of wire drawing die point
It She You not chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634586.1A CN109648266B (en) | 2018-12-29 | 2018-12-29 | Rectangular adjusting nut machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634586.1A CN109648266B (en) | 2018-12-29 | 2018-12-29 | Rectangular adjusting nut machining process |
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| CN109648266A true CN109648266A (en) | 2019-04-19 |
| CN109648266B CN109648266B (en) | 2022-02-08 |
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ID=66116998
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811634586.1A Active CN109648266B (en) | 2018-12-29 | 2018-12-29 | Rectangular adjusting nut machining process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666459A (en) * | 2019-09-27 | 2020-01-10 | 宁波双林汽车部件股份有限公司 | Efficient manufacturing method of automobile electric seat nut |
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| US4377360A (en) * | 1980-05-05 | 1983-03-22 | Wire Products Company, Inc. | Channel nut and method of making same |
| CN202447407U (en) * | 2012-02-27 | 2012-09-26 | 上海奉贤钢管厂 | Mould special for cold-drawing steel pipe |
| CN104785706A (en) * | 2014-11-05 | 2015-07-22 | 连云港珍珠河石化管件有限公司 | Die forging forming machining method for high-neck flange |
| CN104907770A (en) * | 2015-05-29 | 2015-09-16 | 海盐宇星螺帽有限责任公司 | Processing process of tetragonal nut |
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2018
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| CN202447407U (en) * | 2012-02-27 | 2012-09-26 | 上海奉贤钢管厂 | Mould special for cold-drawing steel pipe |
| CN104785706A (en) * | 2014-11-05 | 2015-07-22 | 连云港珍珠河石化管件有限公司 | Die forging forming machining method for high-neck flange |
| CN104907770A (en) * | 2015-05-29 | 2015-09-16 | 海盐宇星螺帽有限责任公司 | Processing process of tetragonal nut |
| CN105543540A (en) * | 2015-12-26 | 2016-05-04 | 汕头华兴冶金设备股份有限公司 | Copper chromium zirconium alloy and preparing method thereof |
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| CN106938285A (en) * | 2017-04-28 | 2017-07-11 | 山西太钢不锈钢股份有限公司 | A kind of manufacture method of stainless steel square tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666459A (en) * | 2019-09-27 | 2020-01-10 | 宁波双林汽车部件股份有限公司 | Efficient manufacturing method of automobile electric seat nut |
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| CN109648266B (en) | 2022-02-08 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Processing Technology of Rectangle Adjusting Nut Effective date of registration: 20221209 Granted publication date: 20220208 Pledgee: Shandong Tengzhou Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG TENDA FASTEN TECHNOLOGY CO.,LTD. Registration number: Y2022980025691 |
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