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A hydraulic tension system of a straight-pull cold/warm rolling test machine and its control method

A tension control, hydraulic tension technology, applied in tension/pressure control, fluid pressure actuation system components, fluid pressure actuation devices, etc., can solve problems such as inapplicability

Active Publication Date: 2020-09-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that none of the existing technologies is suitable for both large tension control and small tension or even micro tension control.

Method used

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  • A hydraulic tension system of a straight-pull cold/warm rolling test machine and its control method
  • A hydraulic tension system of a straight-pull cold/warm rolling test machine and its control method
  • A hydraulic tension system of a straight-pull cold/warm rolling test machine and its control method

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] Such as figure 1 As shown, a hydraulic tension system of a straight-pull cold / warm rolling test machine includes a constant pressure oil source system 45, a left hydraulic clamp 41, a right hydraulic clamp 43, a left tension cylinder, a right tension cylinder, and a left tension control Unit I and right tension control unit II, the left hydraulic clamp 41 is connected to the piston rod of the left tension cylinder, and a left tension gauge 40 is arranged at the connection between the left hydraulic clamp 41 and the left tension cylinder, and the right hydraulic clamp The clamp 43 is connected to the piston rod of the right tension oil cylinder, and a right tension gauge 42 is arranged at the junction of the right hydraulic clamp 43 and the right tension cylinder, and a rolling pin is clamped between the left hydraulic clamp 41 ...

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Abstract

A hydraulic tension system and a control method for a straight-pull cold / warm rolling test machine, belonging to the technical field of hydraulic control, including a constant pressure oil source system, a left tension control unit, a right tension control unit, and a large built-in first displacement sensor Standard left tension cylinder, small specification left tension cylinder with built-in second displacement sensor, large specification right tension cylinder with built-in third displacement sensor, and small specification right tension cylinder with built-in fourth displacement sensor. There are two types of tension cylinders, large and small, with the same mechanical connection size and oil port size, which is easy to replace. A three-way proportional pressure reducing valve with a large flow rate and a large pressure adjustment range is used to control a large-scale tension cylinder to ensure the control requirements of large tension; a three-way proportional pressure reduction valve with a small flow rate and a small pressure adjustment range is used to control a small cylinder with low friction The standard tension cylinder is conducive to the realization of high-precision small tension control.

Description

technical field [0001] The invention belongs to the technical field of hydraulic control, and in particular relates to a hydraulic tension system and a control method thereof, which are suitable for a straight-pull cold / warm rolling test machine with both large and small tension control requirements. Background technique [0002] The straight-pull cold / warm test machine is mainly used for cold and warm processing of difficult-to-deform materials such as automotive sheets, electrical steel, high-strength steel, fine-blanking steel, titanium, and magnesium-based alloys. It is a special rolling process performance research and product for metal materials. Develop important pilot-scale research equipment. For different metal strips in the process of cold rolling and warm rolling from billet rolling to ultra-thin strip finished products, strip stable tension control is a very important core technology. There are many factors that affect the precision of tension control, includin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/48F15B1/02F15B11/16F15B13/06F15B21/041
CPCB21B37/48F15B1/024F15B11/16F15B13/06F15B21/041F15B2211/212F15B2211/615F15B2211/71
Inventor 王贵桥孙涛李建平牛文勇花福安
Owner NORTHEASTERN UNIV LIAONING
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