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Production method of super-hard and super-flat precision strip steel SMT steel mesh material

A production method and technology for strip steel, which can be used in manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of unstable key product quality, poor fit, and poor product warpage, and achieve stable mass production. , the effect of excellent processing performance

Pending Publication Date: 2022-05-20
SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the difficulty of this material is that the key quality of the product is unstable, and it is prone to: 1) deformation of the etched material; 2) poor product warping and poor fit

Method used

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  • Production method of super-hard and super-flat precision strip steel SMT steel mesh material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 (301-0.2-SEHTA)

[0055] (1) Finish rolling:

[0056] Use 301 grade steel cold-rolled raw material 1.2mm (thickness) × 640mm (width), and use Sendewei four-column twenty-high rolling mill to carry out two rolling passes, among which, the middle thickness of the first rolling pass is 0.5mm , After intermediate annealing, the thickness of the finished product rolled in the second rolling process is 0.2mm.

[0057] 0.5mm rolling 0.2mm roll configuration:

[0058] roll Convexity / Taper free roll 0.5mm Drive roller flat roll first intermediate roll 140×0.26mm

[0059] In this embodiment, both the first rolling process and the second rolling process adopt 5 passes, the deformation rate of the first pass is designed to be ≤28%, and the deformation rate of the final pass is designed to be ≤10%. details as follows:

[0060] The first rolling pass:

[0061] pass 1 2 3 4 5 Deformation rate 25.00％ 18.33％ 15.6...

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Abstract

The invention discloses a production method of super-hard and super-flat precision strip steel, which comprises the following steps: a finish rolling step: selecting a raw material steel coil with the thickness of 0.8-1.5 mm according to the target thickness of a finished product, and rolling for at least one rolling process to obtain finished strip steel; a withdrawal and straightening step: straightening the plate shape of the finished strip steel by adopting a withdrawal and straightening unit, and then slicing, so that the flatness of the sliced strip steel is less than or equal to 0.5 mm / m, and the edge warping degree is less than or equal to 1.0 mm / m; and a stress relief annealing step: performing stress relief annealing on the sliced strip steel in an annealing furnace at a preset annealing speed. By optimizing the plate shape control and stress relief annealing process of the superhard material, stable mass production of the SMT steel mesh material can be realized, the SMT steel mesh material is free of deformation and warping after chemical etching or laser slicing, excellent plate shape flatness is kept, and the SMT steel mesh material has excellent processing performance when being used for a stainless steel template material.

Description

technical field [0001] The invention relates to the technical field of stainless steel production, in particular, the invention relates to a method for producing ultra-hard ultra-flat precision steel strips used for etching steel mesh materials. Background technique [0002] Etched stencil material is also called SMT template. It is a special mold for SMT. Its main function is to precisely position the solder paste for welding tiny components on the circuit board, which is convenient for accurate welding of each component unit on the circuit board. It belongs to circuit board manufacturing. industry consumables. At present, the difficulty of this material is that the key quality of the product is unstable, and it is prone to: 1) deformation of the etched material; 2) poor product warping and poor fit. [0003] At present, 304 material is mainly used as etching steel mesh material in the market, the thickness range is 0.08-0.25mm, and the state is all H state. However, cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B15/00B21B27/02
CPCB21B1/222B21B15/00B21B27/021B21B2027/022
Inventor 韩小泉刘玉栋折启耀李学斌段浩杰张艳霞
Owner SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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