Electromagnetic type stroke measurement hydraulic hoist oil cylinder piston rod with alloy powder laser cladding surface

A laser cladding, alloy powder technology, applied in metal material coating process, fluid pressure actuation device, coating and other directions, can solve the problem of easy damage, ultrasonic displacement measurement and image analysis methods are difficult to meet the accuracy requirements, difficult to adapt to complex the engineering environment and other problems, to achieve the effect of satisfactory anti-wear performance

Inactive Publication Date: 2014-03-26
JIANGSU CHENGUANG SUNDE HYDRAULIC EQUIP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The rope-drawing and laser ranging devices need to be installed externally, which is difficult to adapt to the complex engineering environment in the field of water conservancy and tax point engineering and is easily damaged
[0009] Ultrasonic displacement measurement and image analysis methods are difficult to meet the accuracy requirements

Method used

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  • Electromagnetic type stroke measurement hydraulic hoist oil cylinder piston rod with alloy powder laser cladding surface

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Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Choose 45# carbon steel as the base material of the piston rod, choose 316 stainless steel alloy air-blown powder with an average particle size of 50 μm, and use industrial purity argon as the protective gas and powder feeding gas.

[0025] The substrate was turned to a diameter of 99 mm.

[0026] Parallel equidistant rectangular grooves with a depth of 0.4 mm, a width of 4 mm, and a distance of 4 mm are turned on the working surface of the piston rod.

[0027] Sandblast and clean the surface.

[0028] Using 800W laser power to irradiate the surface of the substrate, the scanning speed of the cladding head on the substrate surface is controlled at 4mm / s, the flow rate of the shielding gas is 0.5L / min, and the flow rate of the powder feeding gas is 0.4L / min. Form a 316 stainless steel cladding layer with an average thickness of 0.3mm to 0.4mm.

[0029] The above cladding process was repeated three times to finally obtain a 316 stainless steel cladding layer with an ave...

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Abstract

The invention provides an electromagnetic type stroke measurement hydraulic hoist oil cylinder piston rod with an alloy powder laser cladding surface. The electromagnetic type stroke measurement hydraulic hoist oil cylinder piston rod comprises the alloy powder laser cladding surface and parallel annular electromagnetic measurement grooves below the cladding surface. The sections of the grooves can be rectangular or arc, the depth of the grooves is 0.1mm-2mm, the width of the grooves is 0.5mm-4mm, and the distance between the grooves is 0.5mm-4mm. The wear resistance and corrosion resistance of the surface of the piston rod are well combined with the stroke measurement of the piston rod, the mechanical performance, the corrosion resisting performance and the wear resisting performance of the surface of the piston rod are guaranteed, and meanwhile the accurate measurement on the stroke and speed of the piston rod is achieved.

Description

technical field [0001] The invention relates to the field of design and manufacture of an oil cylinder piston rod of a hydraulic hoist, and provides an electromagnetic stroke measurement hydraulic hoist oil cylinder piston rod on an alloy powder laser cladding surface. Background technique [0002] Hydraulic hoists and their complete sets of equipment are one of the key equipment in water conservancy and hydropower projects. Providing high-quality, durable hydraulic hoists and their complete sets of equipment suitable for my country's national conditions has long been a problem that needs to be solved in water conservancy and hydropower projects. The hydraulic cylinder piston rod, as the stress-bearing part of the key movement, determines the life of the entire hydraulic complete set of equipment and the safe use of water conservancy and hydropower projects. The hydraulic hoist works in the environment of water conservancy projects for a long time, the piston rod is easily c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/20C23C24/10
Inventor 张雪枫吴建平杨阳陈骏杨新明汪云云王俊谢红琴蒋霞
Owner JIANGSU CHENGUANG SUNDE HYDRAULIC EQUIP
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