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Cold rolled strip steel for shadow mask and its making process

A manufacturing method and strip steel technology, applied in cold cathode manufacturing, manufacturing tools, metal rolling, etc., can solve problems such as longitudinal stripes and edge waves, and achieve the effect of smaller temperature range, narrower range and stable performance

Active Publication Date: 2007-01-03
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to significantly improve the material performance and subsequent processing performance of the primary cold-rolled shadow mask strip steel, improve production efficiency and pass-through stability, reduce production costs, and aim at the surface of the primary cold-rolled shadow mask strip steel that is prone to longitudinal stripes and edge waves. problem, providing a control technique

Method used

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Embodiment Construction

[0055] The content of the present invention will be further described through examples according to the different process parameters of the invention.

[0056] The process of each implementation case is as follows: the continuous casting slab is heated to the hot rolling billet opening temperature before hot rolling, coiled after rough rolling, finish rolling and laminar cooling, cooled at room temperature for 2-3 days, and then passed through CDCM unit (pickling and cold continuous rolling), and then through the trimming of the preparation unit, and the CAPL unit (continuous annealing and smoothing), and finally through the internal defect and surface quality inspection, trimming and coiling and other finishing processes to produce shades Cover strip steel finished.

[0057] The chemical composition is shown in Table 1, the main technical parameters are shown in Table 2, and the quality performance is shown in Table 3.

[0058] Example

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Abstract

The present invention is one kind of cold rolled strip steel for shadow mask and its making process. The making process of the cold rolled strip steel includes the following steps: smelting; casting; hot rolling with finishing temperature of 880-900 deg.c and winding temperature of 510-610 deg.c; acid pickling and cold rolling; cutting edge and eliminating edge faults; continuous annealing at 675-695 deg.c in the soaking duration of 20-35 s and flattening. The present invention has excellent product performance, high production efficiency and low production cost.

Description

technical field [0001] The invention relates to a shadow mask strip steel for a color picture tube and a manufacturing method thereof, in particular to the control technology of the material properties of the primary cold-rolled shadow mask strip steel and the longitudinal stripes on the surface and the shape of the plate. Background technique [0002] Chinese patent ZL01113107.1 provides a method for producing shadow mask strip steel with one-time cold rolling and continuous annealing, which overcomes the shortcomings of the international patent (application number WO96 / 13618): [0003] From the perspective of chemical composition, the high carbon content makes the performance of the final shadow mask strip steel poor, and the addition of a small amount of Nb is not enough to fix all the carbon in the steel, so that its anti-aging performance is significantly improved. After increasing the Nb content, although It can improve the anti-aging performance, but at the same time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/28B21B1/22C21D8/02C21D9/52C23C4/08H01J29/07
CPCH01J9/142C22C38/004C22C38/06C22C38/02C22C38/28C22C38/04H01J29/07
Inventor 李俊储双杰关海玲林秀贞金仁忠龚建清
Owner BAOSHAN IRON & STEEL CO LTD
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