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Manufacture method of zinc-iron alloy standard template

A production method and a technology of standard templates, which are applied in the preparation of test samples, test metals, and measuring devices, can solve problems such as long time periods, inability to ensure accuracy, and poor control of iron content, and achieve zinc consumption reduction, The effect of improving product quality

Active Publication Date: 2009-09-02
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, equipment suppliers can only provide pure zinc standard samples, but cannot provide alloyed standard samples, because pure zinc standard samples can be manufactured by pasting zinc films, but alloyed standard samples cannot be manufactured by pasting films, so , the measurement of the iron content of the zinc-iron alloy layer has also become a major technical problem. The key lies in the lack of a standard sample that can be used to calibrate the zinc-iron alloy measurement equipment-on-line coating thickness gauge, which leads to inaccurate measurement of the iron alloy. The content will not be accurately controlled
The iron content is not well controlled, and it is prone to serious stamping powder and quality problems of white edges
At present, chemical analysis is mainly used in production to analyze the damage of zinc-iron alloys, but the time period is relatively long (about two hours), so the accuracy of real-time control cannot be guaranteed

Method used

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Embodiment

[0026] (1) Sampling: DC56 is used as the strip steel steel, and the steel specification is 0.65×1100mm. The steel is hot-dip galvanized, and the process parameters are set as air knife height 300mm, air knife distance 8.5mm / 8.5mm, unit speed 80m / min, and zinc pot temperature 460°C. In this case, the air knife pressure is 200- 650mbar, the air knife power is 20-70, the air knife pressure value is 200mbar, 350mbar, 500mbar, 650mbar in equal proportion, and the air knife power value is 20, 30, 40, 50, 60, 70, as shown in Table 1 Sampling form, samples of 24 specifications can be collected, each specification produces 100-150m meters, after production, the strip steel of each specification is sent to the finishing cross-cutting machine for cutting, and six pieces are reserved for each specification, and the final target sample is required The size is 200*200mm.

[0027] Table 1 Formulation table for sample sampling

[0028]

[0029] (2) Uniformity test: use the high-precision...

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Abstract

The invention provides a manufacture method of a zinc-iron alloy standard template, which comprises four steps of sampling, homogeneity testing, benchmark curve manufacture and value definition. The zThe invention provides a manufacture method of a zinc-iron alloy standard template, which comprises four steps of sampling, homogeneity testing, benchmark curve manufacture and value definition. The zinc-iron alloy standard template provided by the invention covers total process ranges, gives accurate data, and can be used for the calibration of online measuring instruments of the zinc-iron alloyinc-iron alloy standard template provided by the invention covers total process ranges, gives accurate data, and can be used for the calibration of online measuring instruments of the zinc-iron alloyzinc layer and iron content, thus realize that an online coating thickness gage can rapidly and accurately measure the zinc layer and the iron content in alloying products in real time, and meeting thzinc layer and iron content, thus realize that an online coating thickness gage can rapidly and accurately measure the zinc layer and the iron content in alloying products in real time, and meeting the requirement of high-precision production of zinc-iron alloy.e requirement of high-precision production of zinc-iron alloy.

Description

technical field [0001] The invention relates to a method for making an alloyed hot-dip galvanized product, in particular to a method for making a zinc-iron alloy standard template. Background technique [0002] Hot-dip galvanized products are mainly divided into two categories: zinc-iron alloy products (GA) and pure zinc products (GI). Zinc-iron alloyed hot-dip galvanized sheet is to heat the steel sheet after hot-dip galvanizing, keep it warm for a certain period of time, and form a zinc-iron alloy layer through the mutual diffusion of iron in the substrate and zinc in the coating, which makes the zinc-iron alloy product have better Excellent welding and stamping performance, can be more widely used in the production of high-end automotive panels. Therefore, in all the control processes on the hot-dip galvanizing line, the coating thickness control has become a very important part. The quality of its control accuracy will directly affect the quality of the hot-dip galvaniz...

Claims

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Application Information

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IPC IPC(8): G01N33/20G01N1/28G01N23/223G01B21/08
Inventor 李玲李乐榕周意俊文宇浩程国营
Owner BAOSHAN IRON & STEEL CO LTD
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