JPS5562143A - Steel bar for forward extrusion and drawing - Google Patents
Steel bar for forward extrusion and drawingInfo
- Publication number
- JPS5562143A JPS5562143A JP13350978A JP13350978A JPS5562143A JP S5562143 A JPS5562143 A JP S5562143A JP 13350978 A JP13350978 A JP 13350978A JP 13350978 A JP13350978 A JP 13350978A JP S5562143 A JPS5562143 A JP S5562143A
- Authority
- JP
- Japan
- Prior art keywords
- average
- pearlite
- steel products
- segregation
- controlling
- 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
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To prevent occurrence of chevron cracks in the title bar by controlling the pearlite grains and the C segregation of hot rolled steel products contg. a specified amt. of C to specified ranges.
CONSTITUTION: By using a middle or bottom part of an ingot or continuouscast steel and controlling the temp. for rolling it, the conditions for the pearlite grains and the C segregation of the resulting hot rolled steel products are allowed to satisfy equation I (where d is an average pearlite grain diameter μ in the region from the central part of the rolled material to 1/10 of the diameter, σ d is a standard deviation μ in pearlite grain diameter in the same region, and ΔC is a value % obtd. by subtracting the average C content in the total section of the rolled material from the average C content in the same region). Chevron cracks do not occur in the steel products in cold forward extrusion and drawing.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13350978A JPS5562143A (en) | 1978-10-30 | 1978-10-30 | Steel bar for forward extrusion and drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13350978A JPS5562143A (en) | 1978-10-30 | 1978-10-30 | Steel bar for forward extrusion and drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5562143A true JPS5562143A (en) | 1980-05-10 |
Family
ID=15106431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13350978A Pending JPS5562143A (en) | 1978-10-30 | 1978-10-30 | Steel bar for forward extrusion and drawing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5562143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170321309A1 (en) * | 2014-08-08 | 2017-11-09 | Nippon Steel & Sumitomo Metal Corporation | High-carbon steel wire rod with excellent wire drawability |
-
1978
- 1978-10-30 JP JP13350978A patent/JPS5562143A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170321309A1 (en) * | 2014-08-08 | 2017-11-09 | Nippon Steel & Sumitomo Metal Corporation | High-carbon steel wire rod with excellent wire drawability |
| US10487379B2 (en) * | 2014-08-08 | 2019-11-26 | Nippon Steel Corporation | High-carbon steel wire rod with excellent wire drawability |
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