Online measurement method and system for negative deviation of bars

A measurement method and measurement system technology, applied in the field of steel rolling, can solve the problems of large negative deviation control lag and poor accuracy, and achieve the effect of reducing requirements and considerable economic benefits

Active Publication Date: 2018-06-08
MCC CAPITAL ENGINEERING & RESEARCH +1
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Problems solved by technology

[0005] The invention provides an online measurement method and device for the negative deviation of bars to solve the problems of large lag and poor accuracy in negative deviation control

Method used

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  • Online measurement method and system for negative deviation of bars
  • Online measurement method and system for negative deviation of bars
  • Online measurement method and system for negative deviation of bars

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Embodiment Construction

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0044] Such as figure 1 As shown, the bar negative deviation online measurement method of the present invention is used for bar and rebar negative deviation measurement, and the method includes:

[0045] Step A: Measure the actual weight value W of the billet at the entrance of the rolling mill Act , the unit is Kg; W Act It is the weighing value before being out of the furnace / rolling; this value can be obtained by weighing measurement before entering the furnace or being out of the furnace or before rolling; the weight after being out of the furnace can also be obtained by multiplying the length of the billet by the section and converting the specific gravity into weight;

[0046] Step B: Measure the actual total length L of the finished bar Act , the unit is m; ...

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Abstract

The invention provides an online measurement method and system for the negative deviation of bars. The online measurement method for the negative deviation of the bars comprises the steps of A, measuring an actually-measured weight value WAct of blank materials of a rolling mill inlet, wherein the unit is Kg; B, measuring an actually-measured total length LAct of the finished bars, wherein the unit is m; C, obtaining a prediction value of the negative deviation according to a formula. The online measurement system for the negative deviation of the bars at least comprises a multi-length flyingshear programmable controller, a blank material weighing system and a finished product weighing system which are in network connection with a negative deviation calculating server. The online measurement method and system for the negative deviation of the bars can help a user to further narrow a tolerance zone of negative deviation control, the requirement of the negative deviation control for work experience of workers is reduced, the negative deviation tolerance zone can be reduced by about 0.2% and can be expected to reach 0.5% or below, and considerable economic benefits can be brought tosteel companies.

Description

technical field [0001] The invention relates to the field of steel rolling, in particular to the negative deviation rolling of bars and rebars, that is, an online measurement method and system for the negative deviations of bars. Background technique [0002] The negative deviation index of bars and rebars is a crucial technical index for iron and steel enterprises. Increasing the negative deviation rate is one of the effective means to improve the yield of bars and can bring considerable economic benefits to iron and steel enterprises. The negative deviation of rebar is the output without input: For a bar production line with an annual output of 1 million tons of rebar, a negative deviation of 1% is equivalent to 10,000 tons of steel out of thin air. Calculated according to the steel price of 3,000 yuan / ton, the annual negative The deviation can produce 30 million economic benefits, and usually the negative deviation rate of the bar is between 4 and 8%. If the steel is del...

Claims

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Application Information

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IPC IPC(8): B21B38/00
Inventor 岳淳陈庆王洁干思权吉年丰冯建彪王春力郭巨众
Owner MCC CAPITAL ENGINEERING & RESEARCH
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