CN102560013A - Method for eliminating perforation of large-sized ingot type cold-ingot axle shaft steel - Google Patents
Method for eliminating perforation of large-sized ingot type cold-ingot axle shaft steel Download PDFInfo
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- CN102560013A CN102560013A CN2012100232989A CN201210023298A CN102560013A CN 102560013 A CN102560013 A CN 102560013A CN 2012100232989 A CN2012100232989 A CN 2012100232989A CN 201210023298 A CN201210023298 A CN 201210023298A CN 102560013 A CN102560013 A CN 102560013A
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Abstract
The invention relates to a method for eliminating perforating of large-sized ingot type cold-ingot axle shaft steel, belonging to steel rolling methods. The method is characterized in that: the cool furnace temperature of a heating furnace before cold ingot is loaded into a furnace is 700 DEG C; the steel stewing time after the cold ingot is loaded into the furnace is 60 minutes; the heating speed during heating process comprises three temperature-rising control stages, which are 90 DEG C/h, 120 DEG C/h and 150 DEG C/h respectively. In the invention, the perforation phenomenon of the large-scale ingot cold-ingot axle shaft steel can be eliminated, the loss of steel ingot blanks is reduced, and the metal yield of the steel ingot can be improved.
Description
Technical field:
The invention belongs to the steel rolling method, be specifically related to a kind of method of eliminating the cold ingot axle steel perforation of big ingot shape.
Background technology:
In the production process of big ingot shape axle steel; Because the temperature difference of furnace temperature and heat-up rate, the factor of TRT; On the steel billet plane of symmetry, macroscopic void occurs behind the rolling-cogging, produce a kind of perfoliate horizontal implosion defective, cause a large amount of wastes of steel ingot (blank); Quality cost rises, and the rate of steel products produced to steel ingots is low.
Summary of the invention:
In order to eliminate the perforation phenomenon of the cold ingot axle steel of big ingot shape, reduce the loss of steel ingot blank, the present invention provides a kind of method of eliminating the cold ingot axle steel perforation of big ingot shape.
Technical scheme of the present invention is: the cool furnace temperature of process furnace is 700 ℃ before the cold ingot shove charge; The stewing steel time is 60 minutes after the cold ingot shove charge; Rate of heating is that three controls of 90 ℃/h, 120 ℃/h, 150 ℃/h rise step in the heat-processed.
The present invention can eliminate the perforation phenomenon of the cold ingot axle steel of big ingot shape, reduces the loss of steel ingot blank, improves the lumber recovery of steel ingot.
Embodiment:
The steel rolling method of present embodiment is in existing steel rolling method, to carry out improvedly, wherein has only following 3 differences, and the cool furnace temperature of process furnace is 700 ℃ before (1), the cold ingot shove charge; (2), the stewing steel time is 60 minutes after the cold ingot shove charge; (3), rate of heating is that three controls of 90 ℃/h, 120 ℃/h, 150 ℃/h rise step in the heat-processed.
Other method is identical with existing steel rolling method.
Claims (1)
1. eliminate the method for the cold ingot axle steel perforation of big ingot shape, it is characterized in that the cool furnace temperature of the preceding process furnace of cold ingot shove charge is 700 ℃; The stewing steel time is 60 minutes after the cold ingot shove charge; Rate of heating is that three controls of 90 ℃/h, 120 ℃/h, 150 ℃/h rise step in the heat-processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100232989A CN102560013A (en) | 2012-02-02 | 2012-02-02 | Method for eliminating perforation of large-sized ingot type cold-ingot axle shaft steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100232989A CN102560013A (en) | 2012-02-02 | 2012-02-02 | Method for eliminating perforation of large-sized ingot type cold-ingot axle shaft steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102560013A true CN102560013A (en) | 2012-07-11 |
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ID=46406612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100232989A Pending CN102560013A (en) | 2012-02-02 | 2012-02-02 | Method for eliminating perforation of large-sized ingot type cold-ingot axle shaft steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102560013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523175A (en) * | 2021-06-24 | 2021-10-22 | 河南中原特钢装备制造有限公司 | Heating process for preheating cold ingot by using waste heat of heating furnace |
-
2012
- 2012-02-02 CN CN2012100232989A patent/CN102560013A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523175A (en) * | 2021-06-24 | 2021-10-22 | 河南中原特钢装备制造有限公司 | Heating process for preheating cold ingot by using waste heat of heating furnace |
| CN113523175B (en) * | 2021-06-24 | 2022-08-02 | 河南中原特钢装备制造有限公司 | Heating process for preheating cold ingot by using waste heat of heating furnace |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |