Method for prolonging on-machine time of hammerhead of hot rolling fixed-width press

A technology of fixed-width presses and hammer heads, which is applied in the field of fixed-width machines, can solve the problems of deteriorating product quality, high replacement frequency, and high wear and tear of hammer heads, etc., and achieve the effect of prolonging the machine time

Pending Publication Date: 2022-06-28
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for prolonging the working time of the hammer head of the hot-rolling fixed-width press, which solves the technical problems of the prior art that the hammer head of the slab fixed-width press has a high wear rate, high replacement frequency, and deteriorated product quality.

Method used

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  • Method for prolonging on-machine time of hammerhead of hot rolling fixed-width press
  • Method for prolonging on-machine time of hammerhead of hot rolling fixed-width press
  • Method for prolonging on-machine time of hammerhead of hot rolling fixed-width press

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1: Surface quality changes after the hammer head is off the machine

[0063] After using the traditional 16Mn hammer for 1 week, observe the surface quality of the hammer after it is off the machine. Figure 5 shown. After using the ductile iron hammer with the patented composition for 3 weeks, observe the surface quality of the hammer after it is off the machine. Image 6 shown.

[0064] It can be seen from the comparison that a large number of thick line cracks appear on the surface of the traditional 16Mn hammer head after one week of use, and the block has been partially dropped. However, after using the ductile iron hammer head of the patented composition for 3 weeks, a large number of small cracks appeared on the surface of the hammer head, the surface material was complete, and there was no local block drop. Therefore, the use of the patented hammer head can be extended from 1 week to 3 weeks.

Embodiment 2

[0065] Example 2: The surface temperature changes after the hammer head is off the machine

[0066] After the hammer head got off the machine, the infrared thermometer was used to measure the temperature at different positions on the hammer head surface. The results are shown in Table 3.

[0067] It can be seen from the comparison that after the application of the patent, the surface temperature of the hammer head drops from about 60°C before to about 30°C.

[0068] Table 3 The surface temperature of the hammer head before and after the application of this patent

[0069]

[0070] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0071] The method for prolonging the on-machine time of the hammer of a hot-rolled fixed-width press provided in the embodiment of the present application is controlled through three levels of side pressure control, cooling process, and hammer material con...

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Abstract

The invention belongs to the technical field of fixed-width presses, and discloses a method for prolonging on-machine time of a hot-rolling fixed-width press hammerhead, which comprises the following steps of: projecting cooling water to the fixed-width press hammerhead based on the opening degree of the fixed-width press hammerhead; controlling the maximum side pressure amount of the hammerhead of the fixed-width press machine based on the incoming material width of the plate blank; wherein the top wide press hammer is made of nodular cast iron materials, the proportion of pearlite in a base body of the top wide press hammer is larger than or equal to 85%, and an aluminum-calcium composite deoxidizer and heavy rare earth are added in the nodular cast iron production process. According to the method for prolonging the on-machine time of the hammer head of the hot rolling fixed-width press, the on-machine time can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of fixed-width machines, in particular to a method for prolonging the on-machine time of a hammer head of a hot-rolled fixed-width press. Background technique [0002] Slab Sizing Press is a necessary and important equipment for strip hot continuous rolling production line. It can realize online width adjustment of slab, reduce the specifications of incoming slab, and simplify the production process of continuous casting machine. see figure 1 and figure 2 , The hammer head of the fixed-width press is the part that directly contacts the edge of the slab to reduce the width of the slab during the production process, and the wear is the most severe. With the use of the hammer head, the wear amount gradually increases, and the equipment needs to be replaced frequently, which affects the production efficiency and the use cost. Moreover, the cracks or even falling blocks on the surface of the hammer head after ...

Claims

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Application Information

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IPC IPC(8): B21B15/00B21B37/22
CPCB21B15/005B21B15/0035B21B37/22
Inventor 胡亮周政高文刚李瑞张伟李建伟
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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