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A kind of rolling process of rebar

A rebar and process technology, which is applied in the field of rebar rolling, can solve the problems of prolonging non-production time, restricting the working time of pure rolling, and affecting the annual production output, so as to prolong the production time, save auxiliary time and labor. The effect of operating time reduction

Inactive Publication Date: 2015-09-02
XIWANG SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] Each change of specifications and models requires a large number of rolling mills and guides due to the large number of pass processes. The labor intensity of employees in various related processes in the workshop is very high, so the non-production time is extended, and each specification takes more than 2 hours on average, which is extremely large. This restricts the working time of pure rolling and seriously affects the annual production output

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The total technological process of Φ18φ, φ20, φ22 mm is 18 racks, and the finished products are produced in 18V racks.

[0076] All three product specifications share 5 racks of rolling mills such as 11H, 12V, 2602, 2601Y, and 2102. When changing specifications, only the 1801R, 2001R, and 2201R finished rolls of the corresponding specifications are replaced, and each channel is adjusted according to the requirements of the corresponding material type. For the size and line speed of the secondary rolled piece, see Table 4-6 for detailed parameters.

[0077] Table 4 Process parameters for producing Φ18 ribbed steel bar

[0078] .

[0079] Table 5 Process parameters for producing φ20 ribbed steel bars

[0080] .

[0081] Table 6 Process parameters for producing φ22 ribbed steel bars

[0082] .

Embodiment 2

[0084] The total process flow of φ25φ28 mm is 16 sorties, and the finished product is produced in a 16V rack

[0085] The two types of product specifications share 11H, 12V, 2602, and 3-stand hole type rolling mills. When changing specifications, remove 2601Y, 2102 and finished rolling mills used for Φ18, Φ20, and Φ22, and replace 2501R and 2801R finished hole type rolls corresponding to Φ25 and Φ28. , adjust the size and line speed of each pass, and the detailed parameters are shown in Table 7-8.

[0086] Table 7 Process parameters for producing φ25 ribbed steel bars

[0087] .

[0088] Table 8 Process parameters for producing φ28 ribbed steel bar

[0089] .

Embodiment 3

[0091] The total technological process of φ32 mm is 12 sorties and the finished product is produced on a 14V rack

[0092] Change the φ32 mm specification from φ25φ28 mm, remove the 12V, 2602, 2501R, and 2801R finished pass rolling mills used in φ25 and φ28 specifications, share the 11H pass roll, and only replace the corresponding finished roll 3201R, and adjust the rolled pieces for each pass The size and line speed are sufficient, and the detailed parameters are shown in Table 9.

[0093] Table 9 Process parameters for producing φ32 ribbed steel bar

[0094] .

[0095] technical effect

[0096] φ18φ20φ22 specifications have a total of 16 rolling passes, and the finishing rolling unit requires rolling mills of 6 types of holes, and the number of finishing rolls occupied is calculated as one and three 48 compared with the existing technology (84) to reduce 36

[0097] The total rolling passes of φ25φ28 specifications are 14 passes, each of which is composed of 4 passes ...

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Abstract

The invention discloses a rolling process of threaded steel. This process achieves the effect of increasing production by reducing the roll reserve, the number of rolling mills, and the number of guides, shortening the auxiliary time for changing specifications, and increasing the working time of the rolling mill.

Description

technical field [0001] The invention relates to the technical field of thread steel rolling, in particular to a thread steel rolling process. Background technique [0002] Each variety of the specifications produced by the rolling mill has a separate and dedicated set of rolling mill pass arrangement, which occupies a large number of rolling mill equipment, the number of rolls, the variety of hole types, and the variety of guides and guards. Replacement of production specifications The non-production time used during the time takes up a long time, the workload of human resources is heavy, and the consumption index remains high, which greatly restricts the working time, resulting in no room for improvement in production. [0003] The existing technical process layout consists of 18 continuous rolling mills, 1H-2V-3H-4V-5H-6V-7H-8V-9H-10V-11H-12V are the pass codes of the rough rolling unit and the intermediate rolling unit; The continuous rolling mill is composed of 1H-6V cl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/16
Inventor 韩刚王棣王辉宫庆伟李亮
Owner XIWANG SPECIAL STEEL CO LTD
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