Method for designing blanking opening degree of hot-base galvanized square tube

A design method and technology of opening degree, applied in computer-aided design, calculation, special data processing applications, etc., can solve problems such as unsuitable calculation of cutting opening degree, large extrusion amount, surface damage, etc., and achieve considerable social and economic benefits. benefit, achieve fit, performance and dimensional deviation stability

Active Publication Date: 2020-08-18
RIZHAO STEEL HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, a reasonable opening width, that is, the blanking width margin is very important: if the width margin is too large, it is easy to cause a large amount of extrusion when the tube is sized and rounded, causing damage to the surface and easy to produce black lines
However, due to the difference in the properties of heat-based and cold-based materials, this method is not suitable for the calculation of the opening of the heat-based blanking, and a new method is needed to meet the requirements of pipe blanking.

Method used

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  • Method for designing blanking opening degree of hot-base galvanized square tube
  • Method for designing blanking opening degree of hot-base galvanized square tube

Examples

Experimental program
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Effect test

Embodiment

[0028] Embodiment: Adopt the 1.35mm system square tube section specification 4in*2in (1in=2.54mm) material: SGHC.

[0029] (1) Technological requirements: the square pipe adopts the process of reaming and sizing, and the welding seam does not make a bending angle; according to the technological requirements, n=4.

[0030] (2) Material performance requirements: The material SGHC is a Japanese standard product, and the yield strength is: 205MPa≤Rel≤245MPa; n=3 according to the process requirements.

[0031] (3) When the two n values ​​are inconsistent, take the maximum n=4 as the calculation coefficient,

[0032] Substitute into the formula W=A×2+B×2-nT.

[0033] W=4×2.54×2+2×2.54×2-4×1.35=25.08mm

[0034] The final product is as figure 2 As shown, the finished product rate is high, and there is no black line on the surface.

[0035] By adopting the calculation method for the blanking opening of heat-based thin gauge galvanized pipe (square pipe) provided by the present inv...

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Abstract

The invention discloses a method for designing the blanking opening degree of a hot-base galvanized square tube, which belongs to the field of galvanized tube manufacturing. A hot-base galvanized plate is used as a raw material, and the blanking opening degree W is equal to A*2+B*2-nT; when cold-bending high-frequency welding is carried out for direct production and chambering and sizing are not carried out, n is 1; when sizing is carried out but chambering is not carried out, n is 2; in the chambering and sizing machining process, when a bent angle is formed at a weld joint, n is 3; and whenthe weld joint is not bent, n is 4. The forming problem of galvanized plates produced on the basis of a hot-base acid plating continuous production line on square tubes can be solved.

Description

technical field [0001] The invention relates to a galvanized pipe making process, in particular to a method for designing and calculating the blanking opening degree of a heat-based galvanized square pipe. Background technique [0002] Galvanized sheet cutting and tube forming are widely used in building materials, vehicles, fitness equipment and other industries. In the prior art, cold-rolled galvanized sheets are generally used as the base material with a thickness of less than 1.7 mm. [0003] With the development of hot-base thin specification raw material production technology and the advanced process technology configuration of acid plating continuous production line, the production of hot-dip galvanizing with hot-base thin specification (<1.7mm) without spangles can be realized. Because the hot-base thin-gauge spangle-free hot-dip galvanizing process saves the cold-rolling and rolling process, does not undergo cold-rolling work hardening, and at the same time save...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F113/14
CPCG06F30/17G06F2113/14Y02P10/25
Inventor 游加伟秦哲狄丽华林承江魏代斌黄友坡鲍振振刘洪磊门均磊马世文王旭包红军王中辉田坤
Owner RIZHAO STEEL HLDG GROUP
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