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Length control method of metal powder rolled raw plate blank top crop

A technology of metal powder and control method, which is applied in the field of cutting length control of metal powder rolled green slabs, can solve problems such as waste of raw materials, lower quality of sintered products, and excessive length of cutting ends, so as to improve product quality and realize the best The effect of optimizing and saving raw materials

Inactive Publication Date: 2010-03-17
SHANGHAI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are: if the cutting head is too long, it will cause waste of raw materials; if the cutting head is too short, it will cause a decrease in the quality of sintered products and a waste of sintering energy
[0004] The main reason causing the above defects in the prior art is: the lack of an objective quantitative index to evaluate the rationality of the rolling process
Specifically, there is still a lack of an accurate method for determining the cut length of powder rolled green slabs

Method used

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  • Length control method of metal powder rolled raw plate blank top crop
  • Length control method of metal powder rolled raw plate blank top crop

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Experimental program
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Effect test

Embodiment

[0015] Embodiment: In this embodiment, tungsten-copper alloy powder is used, and the powder is placed between two rolls of a special rolling equipment with a rolling pressure electronic sensing system device, and then the motor is started for rolling operation. And obtain the change trend or change curve of the pressure with time recorded by the ad hoc pressure electric sensor system, and obtain the cut length of the green slab through the time taken for the rolling pressure to reach a steady state and the rotation speed of the roll.

[0016] The rolling equipment used in this embodiment can be found in figure 1 . figure 1 It is a schematic diagram of the rolling equipment with the pressure electronic sensing system device of the present invention.

[0017] Such as figure 1 As shown, this special device is improved on the basis of traditional original general-purpose rolling equipment. The system device includes: a pair of rollers 1, spring 2, roller bearing 3, bearing seat...

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Abstract

The invention relates to a length control method of a metal powder rolled raw plate blank top crop, belonging to the technical field of metal powder rolling technology. The invention utilizes the general traditional rolling equipment to improve and assemble to obtain rolling equipment provided with a rolling electric pressure sensing system device. The invention utilizes the electric pressure sensing system device to measure pressure variation of metal powder in a roller mill in the rolling process and obtains time experienced by rolling pressure to be stable by recording variation tendency orvariation curve of pressure along with time in the rolling process, and the time multiplies by roller rotating speed to obtain the length of the metal powder rolled raw plate blank top crop. The invention has the advantages of energy saving and raw material saving and is favorable for improving product quality. The method of the invention can realize objectification and scientificity of judging atop crop length index in the technological process and is favorable for realizing process optimization.

Description

technical field [0001] The invention relates to a method for controlling the cutting length of a metal powder rolling green slab, and belongs to the technical field of metal powder rolling technology. Background technique [0002] The existing powder rolling green slab cutting process method is: the metal powder is sent to the powder rolling mill through the feeding funnel for rolling, and the front end density of the rolled billet is obviously lower than that of other parts. According to the different materials used, the difference between the two varies from 25 to 35%. In order to ensure the quality of the product, it needs to be cut off. At present, the cutting length of green slab is mainly determined by technicians based on experience. [0003] From the above analysis, it can be seen that at present, the determination process of green slab cutting length is dominated by experience and subjectivity, and the formulation of the process still lacks an objective basis. The...

Claims

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Application Information

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IPC IPC(8): B22F3/18
Inventor 杨宁朱玉斌孙远许伟王妍
Owner SHANGHAI UNIV
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