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Hydraulic tension system of straight drawing cold/warm rolling experiment machine and control method thereof

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

Active Publication Date: 2019-10-15
NORTHEASTERN UNIV
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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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  • Hydraulic tension system of straight drawing cold/warm rolling experiment machine and control method thereof
  • Hydraulic tension system of straight drawing cold/warm rolling experiment machine and control method thereof
  • Hydraulic tension system of straight drawing cold/warm rolling experiment machine and control method thereof

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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

The invention discloses a hydraulic tension system of a straight drawing cold / warm rolling experiment machine and a control method thereof, and belongs to the technical field of hydraulic control. Thesystem comprises a constant-pressure oil source system, a left tension control unit, a right tension control unit, a large-specification left tension oil cylinder provided with a first displacement sensor inside, a small-specification left tension oil cylinder provided with a second displacement sensor inside, a large-specification right tension oil cylinder provided with a third displacement sensor inside, and a small-specification right tension oil cylinder provided with a fourth displacement sensor inside. The tension oil cylinders with large and small specifications are provided; and themechanical connecting sizes and the oil port sizes are totally the same, so that the replacement is convenient. The large-specification tension oil cylinders are controlled by a three-way proportionalpressure reducing valve with a high flow and a wide pressure adjusting range to guarantee high-tension control demands; and low-friction-damping small-specification tension oil cylinders are controlled by a three-way proportional pressure reducing valve with a low flow and a narrow pressure adjusting range to realize high-precision low-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 Applications(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
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