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Rolling method for idle-away of single machine frame of high-speed wire roughing mill

A high-speed wire rod and rough rolling mill technology, applied in the direction of rolling mill control devices, metal rolling, metal rolling, etc., can solve the problems of wire rod production line shutdown, large rolling deformation, and prone to production failures, etc., to achieve changing maintenance modes, The effect of good economic benefits

Active Publication Date: 2009-09-30
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the high-speed wire rod rolling production, the rolling deformation of each stand of the roughing unit is relatively large, the rolling load is large, and production failures are prone to occur.
Once a rough rolling stand breaks down and cannot operate, the entire wire rod production line will stop production due to waiting for spare parts

Method used

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  • Rolling method for idle-away of single machine frame of high-speed wire roughing mill
  • Rolling method for idle-away of single machine frame of high-speed wire roughing mill
  • Rolling method for idle-away of single machine frame of high-speed wire roughing mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] For the rolling of Φ5.5 medium carbon steel 42CrMo, the rough rolling mill roll pass design is: the order of each rack is the new pass—A1( Figure 7 ), empty pass, original hole type—C oval hole, new hole type—D2( Picture 10 ) Round hole, original hole type-E oval hole, original hole type-F round hole. In the production, the 2V stand is used for empty-pass rolling, the rolling process is stable, and the downtime of failure is reduced. The rolling rules are shown in Table 1:

[0049] Table 1: 2V empty pass rolling parameter table

[0050]

Embodiment 2

[0052] For the rolling of Φ12.5 medium carbon steel 35K, the roughing mill roll pass design is: the order of each rack is the new pass—A1( Figure 7 ), new hole type—B1( Figure 8 ) Oval hole, empty pass, original hole type—D round hole, original hole type—E oval hole, original hole type—F round hole. In the production, the 3H stand is used for empty-pass rolling, the rolling process is stable, and the downtime of failure is reduced. The rolling schedule is shown in Table 2:

[0053] Table 2: 3H Pass-through Rolling Parameters Table

[0054]

Embodiment 3

[0056] For the rolling of Φ12.5 medium carbon steel 35K, the roughing mill roll pass design is: the order of each rack is the new pass—A1( Figure 7 ), new hole type—B1( Figure 8 ) Round hole, original hole type-C oval hole, empty through, original hole type-E oval hole, original hole type-F round hole. In the production, the 4V stand is adopted for empty-pass rolling, the rolling process is stable, and the downtime of failure is reduced. The rolling schedule is shown in Table 3:

[0057] Table 3: 4V no-pass rolling parameter table

[0058]

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Abstract

The invention discloses a rolling method for idle-away of a single machine frame of a high-speed wire roughing mill. The roughing mill set (1H, 2V, 3H, 4V, 5H and 6V) is arranged at intervals of a horizontal machine frame H and a vertical machine frame V. When one single machine frame except the 1H has failures, the idle-away of the single machine frame is realized to continue production by using other hole types, and favorable economic benefits are also created; moreover, a transmission system of the wire roughing mill set can be maintained in a non-stop state, so that the production maintenance mode of an enterprise is completely changed.

Description

Technical field [0001] The invention relates to a method for rolling a high-speed wire rod, in particular to a method for rolling a high-speed wire rod when a single stand of a roughing mill is empty. Background technique [0002] High-speed wire rod rolling production usually uses the emptying of some racks of the finishing mill and pre-finishing mill to achieve product variety replacement, or when some of the above-mentioned units fail, the emptying of some of the racks in the unit is used to achieve other specifications of wire rod Rolling production to ensure the continuation of wire production. However, the single-stand empty over-rolling of the roughing mill will not be used to achieve product variety replacement. [0003] The roughing unit of a high-speed wire rod mill generally has 6 racks. During normal production, the rack passing sequence is: 1# rack to 6# rack pass sequentially, and the rack layout is horizontal-vertical alternate (H-V) arrangement. For the high-speed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/18B21B27/02B21B37/58B21B37/16
Inventor 杨霄陈林阎军章静张瑞华
Owner BAOSHAN IRON & STEEL CO LTD