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Method for achieving soft reduction transformation of slab continuous caster

A slab continuous caster and light-reduction technology, applied in the field of metallurgical equipment, can solve the problems of long time consumption, unmatched output of iron-making, steel-making, and steel-rolling equipment, and enterprise losses, so as to reduce indirect losses and shorten transformation. Downtime, direct cost reduction effect

Active Publication Date: 2017-01-11
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

According to the general transformation idea, after manufacturing all the hydraulic and electrical equipment, the slab continuous casting machine is shut down and the hydraulic and electrical systems are gradually transformed, which takes a long time and easily reduces the output of upstream and downstream ironmaking, steelmaking and steel rolling equipment Mismatch, bring certain losses to the enterprise

Method used

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  • Method for achieving soft reduction transformation of slab continuous caster
  • Method for achieving soft reduction transformation of slab continuous caster
  • Method for achieving soft reduction transformation of slab continuous caster

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a method for realizing the light-reduction modification of a slab continuous casting machine, which includes the following steps:

[0028] Step 1: Replace the original clamping cylinder on the off-line spare parts segment with a clamping cylinder with light pressing function to complete the transformation of the spare parts segment;

[0029] Step 2: Arrange one PLC control master station and several PLC control slave stations in the production process of the continuous casting machine, which are independent from the electrical control system of the original slab continuous casting machine;

[0030] Step 3: During the normal shutdown of the slab continuous casting machine, replace the segment produced on the line with the modified spare part segment, and then replace the clamping cylinder of the replaced segment with a light pressing function the clamping cylinder;

[0031] Step 4: During the normal shutdown of the slab continuous casting machin...

Embodiment 2

[0040] This embodiment elaborates the hydraulic control system in detail, such as figure 1 As shown, the hydraulic control system includes the power unit that provided power before the transformation, the segment control valve table connected to the power station before the modification, the driving roller hydraulic cylinder controlled by the segment control valve table, and the clamping device with light pressing function. cylinder.

[0041]The four clamping hydraulic cylinders and the two driving roller hydraulic cylinders of the traditional continuous casting machine sector are usually controlled by the hydraulic control device installed on the valve table, and the hydraulic medium is converted from P and T oil circuits to A through the valve table control device. , B oil circuit connects the two chambers of the clamping cylinder. In this embodiment, the function of the clamping cylinder control part on the valve table is converted from the original system's control of the...

Embodiment 3

[0045] The change of the hydraulic control system of the sector clamping cylinder determines that the corresponding electric control system should also be changed accordingly. Such as Figure 4 As shown, the electrical control system includes a computer, the original electrical PLC control station, and also includes a PLC control master station and a plurality of PLC control slave stations. It is displayed on the computer; the PLC control master station is electrically connected to each PLC control slave station, and each PLC control slave station corresponds to a transformed sector respectively; communication is provided between the PLC control master station and the original electric PLC control station cables. The PLC control master station adopts S-400 type PLC module, which is connected with each PLC control slave station through DP communication bus, and the PLC control slave station adopts S-300 type PLC module, which is connected with the sensor on the sector clamping...

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Abstract

The invention belongs to the field of metallurgical equipment, and particularly relates to a method for achieving soft reduction transformation of a slab continuous caster. The method for achieving soft reduction transformation of the slab continuous caster comprises the steps that sector segments of an offline spare part are firstly transformed, and therefore the sector segments have the function of soft reduction; then the transformed sector segments with the function of soft reduction are used online by stages; and replaced sector segments are transformed. Meanwhile, a corresponding electrical system and an original electrical system are relatively independent and can be arranged during the production and normal overhaul period of the continuous caster, finally transformation of all the sector segments is finished, and after the electrical systems are arranged, the sector segments are put into a soft reduction system in a unified manner at the overhaul time of the continuous caster. According to the method, the traditional sector segments can be conveniently and fast transformed to have the function of soft reduction, production of the continuous caster cannot influenced, production and transformation are achieved at the same time, and the transformation shutdown time is greatly shortened; by relying on existing equipment, the direct transformation cost is reduced; and indirect losses are greatly reduced.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, and in particular relates to a method for realizing light-reduction transformation of a slab continuous casting machine. Background technique [0002] The traditional slab continuous casting machine sector adopts the fixed roll gap casting method, which is prone to quality problems such as loose center of the slab and center segregation when casting some special steel grades. Modern slab continuous casting machines generally adopt the dynamic soft reduction technology of the sector segment, which can effectively solve these problems. [0003] Currently, traditional slab casters are being phased out or transformed into modern slab casters with soft reduction. However, there is a big difference between the traditional slab continuous casting machine and the modern slab continuous casting machine with light reduction function in the hydraulic control system and electrical control system. The ...

Claims

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Application Information

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IPC IPC(8): B22D11/12B22D11/16
CPCB22D11/12B22D11/16
Inventor 张伟李生斌李向辉
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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