CN103557218A - External hexagonal-flower type flange bolt and manufacturing method thereof - Google Patents
External hexagonal-flower type flange bolt and manufacturing method thereof Download PDFInfo
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- CN103557218A CN103557218A CN201310554359.9A CN201310554359A CN103557218A CN 103557218 A CN103557218 A CN 103557218A CN 201310554359 A CN201310554359 A CN 201310554359A CN 103557218 A CN103557218 A CN 103557218A
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Abstract
The invention discloses an external hexagonal-flower type flange bolt which consists of an external hexagonal-flower type flange screw head and an all-teeth screw which are arranged in sequence from top to bottom. According to the bolt, the phenomenon of imitation can be effectively avoided, and the bonding strength of the bolt to a connection piece can be improved to the maximum extent. A manufacturing method for the external hexagonal-flower type flange bolt comprises the steps of 1) detecting fed raw materials; 2) breaking the materials; 3) performing hot-heading forming; 4) performing thermal treatment; 5) testing the tensile strength under normal temperature and high temperature of 400 DEG C, and testing the impact performance under temperature of minus 40 DEG C; 6) performing fine processing; 7) performing fine grinding on a threaded blank diameter; 8) performing thread rolling; 9) performing 100 percent magnetic powder flaw detection; 10) performing surface treatment. According to the manufacturing method, the phenomena of surface oxidization, decarbonization and thread folding of the bolt are avoided. The bolt produced by the method can meet a braking requirement of a high-speed train on the strength reliability under the high temperature of 400 DEG C and the comprehensive performance requirements on impact resistance, vibration resistance and fatigue breakage resistance in severe environments under the low temperature of minus 40 DEG C (namely the high temperature and the low temperature are alternated continuously).
Description
Technical field
The present invention relates to a kind of bolt, be specifically related to a kind of outer six flower flange face bolt and manufacture methodes thereof, outer six flower flange face bolts are fastening for high-speed train braking wheel disc.
Background technique
In the prior art, the high ferro braking wheel disc clamping bolt of domestic use is the nonstandard bolt of import, the nonstandard bolt unit price of this import is expensive, delivery cycle is long, third party through mechanical industry spare part in common use product quality supervision inspection center detects, and its tensile strength can not meet ISO898-1 10.9 grade standard requirements completely.Meanwhile, the segmentation of this import bolt in high ferro is exercised 300,000 kilometers unloaded in detection, finds that indivedual bolts have phenomenon of rupture.In addition, the spiral shell head difficulty of processing of traditional outer-hexagonal or hexagon socket head cap screw is less, is easy to copy.Yet, because bullet train is had relatively high expectations to the intensity of clamping bolt and the combination property of toughness of braking wheel disc, once there be underproof Counterfeit Item, can produce serious potential safety hazard.
In view of above reason, innovate a kind of high-quality, braking wheel disc clamping bolt and manufacture method thereof that cost is reasonable, safe, novel; Realize the production domesticization of this bolt, become the problem that we compatriots need research badly.
Summary of the invention
An object of the present invention is for replace imported bolt, reduce costs, overcome the deficiency of import bolt, a kind of outer six flower flange face bolts are provided, this bolt is not easy to copy, and can meet the combination property requirement of the reliability of 400 celsius temperature intensity of bullet train Multiple disc brake requirement and the shock resistance of subzero 40 degrees Celsius (being that high and low temperature continues alternation) rugged environment of low temperature, anti-vibration, fatigue crack-resistant.
The object of the invention is to be achieved through the following technical solutions: a kind of outer six flower flange face bolts, by the outer six flower flange valve snail heads and the full tooth screw rod that set gradually from top to bottom, formed, described outer six flower flange valve snail heads by body head, be arranged at the flange plate of body head lower end and six fillets being uniformly distributed on body head circumference form.
The difficulty of processing of outer six flower flange valve snail heads of the present invention is higher, can effectively avoid copying.Full tooth screw rod can improve the combination force of bolt and link to greatest extent.
The skin of described outer six flower flange valve snail heads and described full tooth screw rod is provided with Dacromet/steel, and surface adopts Dacroment process treating, can effectively guarantee moisture proof, the acid-resistance of bolt, the corrosion resistance of sand-proof.
Another object of the present invention is in order to overcome the deficiencies in the prior art, and a kind of manufacture method of outer six flower flange face bolts is provided, and the outer six flower flange face bolts of this method manufacture can be used in being fastened securely of high-speed train braking wheel disc.
Another object of the present invention is achieved through the following technical solutions: a kind of manufacture method of outer six flower flange face bolts, comprises the following steps successively: 1) raw material charging detects; 2) fracture; 3) hot upsetting moulding; 4) heat treatment; 5) normal temperature and 400 celsius temperature tensile strength detect and subzero 40 degrees Celsius of ballistic works test; 6) fine finishing; 7) fine grinding screw thread embryo footpath; 8) rolled thread; 9) 100% magnetic particle flaw detection; 10) surface treatment;
For guaranteeing that bolt is in the reliability of 400 celsius temperature intensity and shock resistance, anti-vibration, the fatigue crack-resistant performance of subzero 40 degrees Celsius (being that high and low temperature continues alternation) Service Environment of low temperature, raw material is selected B16 steel, and the chemical Composition Control scope of B16 steel is: C%:0.36-0.47; P% :≤0.035; S% :≤0.040; Si%:0.15-0.35; Cr%:0.80-1.15; Mn%:0.45-0.70; Mo%:0.50-0.65; V%:0.25-0.35; Al% :≤0.015.
For avoiding material defects, ensure the reliable hardenability of bolt subsequent heat treatment and temper resistance, in first being processed, raw material are carried out to the metallographic detection of chemical composition spectrum analysis, raw material slag inclusion and the ultrasound examination of raw material subsurface defect successively.
Above-mentioned manufacture method can guarantee material quality, effectively avoids the generation of bolt surface oxidising, decarburization and threaded folding phenomenon.The overall target of the reliability of 400 celsius temperature intensity and the shock resistance of subzero 40 degrees Celsius (high and low temperature continues alternation) rugged environment of low temperature, anti-vibration, fatigue crack-resistant while guaranteeing the military service of finished product bolton.
Accompanying drawing explanation
Fig. 1 is the perspective view of outer six flower flange face bolts;
Fig. 2 is the plan view of outer six flower flange face bolts;
Fig. 3 is the FB(flow block) of the manufacture method of outer six flower flange face bolts.
In Fig. 1, Fig. 2: 1-body head; 2-flange plate; The full tooth screw rod of 3-; 4-fillet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1 and Figure 2, a kind of outer six flower flange face bolts, consist of the outer six flower flange valve snail heads and the full tooth screw rod 3 that set gradually from top to bottom; Outer six flower flange valve snail heads by body head 1, be arranged at the flange plate 2 of body head 1 lower end and six equally distributed fillets 4 being arranged on body head 1 circumference form.
In Fig. 3,010) inspection of raw and process materials; 020) fracture; 030) preprocessing; 040) hot upsetting moulding; 050) ball blast or preliminary working; 060) heat treatment; 061) normal temperature and the test of 400 celsius temperature tensile strength and subzero 40 degrees Celsius of low-temperature impact works test; 070) alignment (if any bending); 080) fine finishing and straightness accuracy check; 081) fine grinding screw thread embryo footpath; 090) bolt production batch sign; 091) rolled thread; 100) 100% magnetic particle flaw detection; 110) surface treatment; 120) inspection eventually, packing and delivery.Through the outer six flower flange face bolt product surface non-oxidations of above method manufacture, without decarburization, without threaded folding, guarantee that bolt, in the reliability of 400 celsius temperature intensity and shock resistance, anti-vibration, the fatigue crack-resistant performance of subzero 40 degrees Celsius (being that high and low temperature continues alternation) Service Environment of low temperature, possesses the combination property of moisture proof, acid-resistance, sand-proof corrosion simultaneously.
The outer six flower flange face bolts that manufacture method of the present invention processes are through installation checking, installation dimension meets the fastening requirement of bullet train Multiple disc brake completely, product mechanical property is moved 6 wheat harvesting periods through laboratory test-run a machine, the segmentation that formal installation examination race is more than 30 ten thousand kilometers is unloaded in detection, non-cracking, without distortion, the requirement of the shock resistance of subzero 40 degrees Celsius (high and low temperature continues alternation) rugged environment of 400 celsius temperature strength reliabilities and low temperature, anti-vibration, fatigue crack-resistant while meeting Multiple disc brake.
Finally should be noted that; above content is only in order to illustrate technological scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technological scheme of the present invention or be equal to replacement, does not all depart from essence and the scope of technical solution of the present invention.
Claims (3)
1. spend flange face bolts for one kind outer six, it is characterized in that: described outer six flower flange face bolts consist of the outer six flower flange valve snail heads and the full tooth screw rod that set gradually from top to bottom, described outer six flower flange valve snail heads by body head, be arranged at the flange plate of body head lower end and six fillets being uniformly distributed on body head circumference form.
2. a manufacture method for outer six flower flange face bolts, is characterized in that: the skin of described outer six flower flange valve snail heads and described full tooth screw rod is provided with Dacromet/steel.
3. a manufacture method for outer six flower flange face bolts, is characterized in that: raw material are B16 steel, and this material chemical composition control range is: C%:0.36-0.47; P% :≤0.035; S% :≤0.040; Si%:0.15-0.35; Cr%:0.80-1.15; Mn%:0.45-0.70; Mo%:0.50-0.65; V%:0.25-0.35; Al% :≤0.015;
The manufacture method of described outer six flower flange face bolts comprises the following steps successively: 1) raw material receiving inspection; 2) fracture; 3) hot upsetting moulding; 4) heat treatment; 5) test of normal temperature and 400 celsius temperature tensile strength and subzero 40 degrees Celsius of ballistic works test; 6) fine finishing; 7) fine grinding screw thread embryo footpath; 8) rolled thread; 9) 100% magnetic particle flaw detection; 10) surface treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554359.9A CN103557218B (en) | 2013-11-11 | 2013-11-11 | Outer six flower flange face bolt and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554359.9A CN103557218B (en) | 2013-11-11 | 2013-11-11 | Outer six flower flange face bolt and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557218A true CN103557218A (en) | 2014-02-05 |
| CN103557218B CN103557218B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310554359.9A Active CN103557218B (en) | 2013-11-11 | 2013-11-11 | Outer six flower flange face bolt and its manufacture method |
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| Country | Link |
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| CN (1) | CN103557218B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405553A (en) * | 2019-07-05 | 2019-11-05 | 云和县凯毅德电子设备厂 | A kind of bearing machining polishing machine |
| CN110842485A (en) * | 2019-11-28 | 2020-02-28 | 苏州法思特精密五金有限公司 | Stainless steel screw lettering and knurling processing technology |
| CN112518254A (en) * | 2020-11-30 | 2021-03-19 | 中国航空工业标准件制造有限责任公司 | Machining method of high-precision bolt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201507528U (en) * | 2009-09-30 | 2010-06-16 | 安维车件(厦门)有限公司 | Locking bolt |
| JP2011001602A (en) * | 2009-06-18 | 2011-01-06 | Kobe Steel Ltd | Aluminum alloy wire rod material for high-strength bolt having excellent formability, method for producing the same, high-strength flange bolt and method for producing the same |
| CN203570793U (en) * | 2013-11-11 | 2014-04-30 | 上海才孚机械有限公司 | Outer hexagon flange bolt |
-
2013
- 2013-11-11 CN CN201310554359.9A patent/CN103557218B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011001602A (en) * | 2009-06-18 | 2011-01-06 | Kobe Steel Ltd | Aluminum alloy wire rod material for high-strength bolt having excellent formability, method for producing the same, high-strength flange bolt and method for producing the same |
| CN201507528U (en) * | 2009-09-30 | 2010-06-16 | 安维车件(厦门)有限公司 | Locking bolt |
| CN203570793U (en) * | 2013-11-11 | 2014-04-30 | 上海才孚机械有限公司 | Outer hexagon flange bolt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405553A (en) * | 2019-07-05 | 2019-11-05 | 云和县凯毅德电子设备厂 | A kind of bearing machining polishing machine |
| CN110405553B (en) * | 2019-07-05 | 2020-12-01 | 青田县祥正科技有限公司 | Polishing machine for bearing machining |
| CN110842485A (en) * | 2019-11-28 | 2020-02-28 | 苏州法思特精密五金有限公司 | Stainless steel screw lettering and knurling processing technology |
| CN112518254A (en) * | 2020-11-30 | 2021-03-19 | 中国航空工业标准件制造有限责任公司 | Machining method of high-precision bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103557218B (en) | 2017-12-19 |
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