JPS5797819A - Manufacture of tapered rod - Google Patents
Manufacture of tapered rodInfo
- Publication number
- JPS5797819A JPS5797819A JP17503180A JP17503180A JPS5797819A JP S5797819 A JPS5797819 A JP S5797819A JP 17503180 A JP17503180 A JP 17503180A JP 17503180 A JP17503180 A JP 17503180A JP S5797819 A JPS5797819 A JP S5797819A
- Authority
- JP
- Japan
- Prior art keywords
- wire rod
- rod
- diameter part
- tapered rod
- smallest diameter
- 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
Landscapes
- Metal Extraction Processes (AREA)
Abstract
PURPOSE: To prevent the breakage of a tapered rod and improve the productivity in forming a tapered rod by stretching a specified material giving temperature gradient in an axial direction by operating so that the strain rate of the smallest diameter part becomes within a specified range.
CONSTITUTION: A wire rod containing 0.35W1.10wt% C, and if required, ≤ 2.5wt% Si, ≤1.5wt% Mn, ≤3.0wt% Cu, ≤3.0wt% Ni, ≤5.0wt% Cr, ≤1.0wt% Mo, ≤1.0wt% V, ≤0.05wt% B, ≤0.1wt% Al, ≤0.5wt% Ti, Nb, Zr, Ta, W, Hf, respectively, and the rest is composed of Fe is heated at heating temperature of 600W1,000°C making the temperature gradient lower with increase of diameter from the smallest diameter part of the wire rod. Next, a tapered rod is formed by stretching the wire rod so that the strain rete, i.e. the change of sectional area of the smallest diameter part per unit time is set to the range of 0.5W 1,000%/sec. The composition, temperature, strain rate are limited to prevent breakage of a wire rod and improve fatigue life.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503180A JPS5797819A (en) | 1980-12-11 | 1980-12-11 | Manufacture of tapered rod |
| FR8105035A FR2477914A1 (en) | 1980-03-17 | 1981-03-13 | METHOD AND APPARATUS FOR MANUFACTURING CONICAL RODS |
| DE19813110043 DE3110043A1 (en) | 1980-03-17 | 1981-03-16 | Method and apparatus for the production of tapered rods |
| AU72605/81A AU546759B2 (en) | 1980-07-11 | 1981-07-06 | Manufacturing tapered rods |
| AT81304219T ATE8970T1 (en) | 1980-12-11 | 1981-09-15 | METHOD AND APPARATUS FOR MANUFACTURING TAPERED RODS. |
| EP19810304219 EP0054343B1 (en) | 1980-12-11 | 1981-09-15 | Method for manufacturing tapered rods and apparatus therefor |
| US06/617,131 US4842818A (en) | 1980-03-17 | 1984-06-04 | Method for manufacturing tapered rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503180A JPS5797819A (en) | 1980-12-11 | 1980-12-11 | Manufacture of tapered rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5797819A true JPS5797819A (en) | 1982-06-17 |
Family
ID=15989002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17503180A Pending JPS5797819A (en) | 1980-03-17 | 1980-12-11 | Manufacture of tapered rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5797819A (en) |
-
1980
- 1980-12-11 JP JP17503180A patent/JPS5797819A/en active Pending
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