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Dongguan Life-Style Casting Co.,Ltd

Address: Zhonghuiliyang Shidai, Dongcheng, Dongguan, Guangdong, China 523180

GeneralManager: Sherry Luo

Tel: 86-769-89865086

Mobile: 86-13712854626

Fax: 86-769-89865086

Whatsapp: 86-13712854626

E-mail: info@life-stylecasting.com

               sherryluo86@gmail.com 

Skype: miaomiao91919

www.lifestylecasting.com

Effect Of Thermal Deformation And Cold Deformation On Pump And Valve Casting Part Size

Effect of Thermal Deformation and Cold Deformation on Pump and Valve Casting Part Size
1. The effect of cold deformation, in the product annealing, mechanical processing after the warping distortion caused by deformation.
Reason: Due to the existence of residual stress in the Pump And Valve Casting Part, the resulting process is released.
To optimize the annealing process, adjust the time, temperature, and cooling method, to improve the rigidity of the product, to increase the rigidity of the product design, to increase the rigidity; to reduce the pressure of the pump and valve casting the stress, reduce the pouring temperature, reduce the mold temperature and prolong the mold stay time.
2. The effect of thermal deformation, when the pump And Valve Casting Part from the mold after the demoulding, due to the removal of different parts, unequal heat shrinkage led to Pump And Valve Casting Part size changes, resulting in Pump And Valve Casting Part size bad.
Reason: As the wall thickness of the product is not exactly the same, there is a sudden change in the wall thickness of the wall, Pump And Valve Casting Part stress concentration, when taken out of Pump And Valve Casting Part, different parts of the contraction is not equal proportion of shrink; Valve Casting Part In the hot state, a small force will also lead to Pump And Valve Casting Part deformation, placement method is not correct will lead to deformation.
Countermeasure: product structure improvement, such as smooth transition, proper fillet, wall thickness uniformity; appropriate installation of ribs, reduce stress concentration, increase the rigidity of Pump And Valve Casting Part; mold temperature control, different parts set cooling channel; Change the use of release agent, adjust the concentration, adjust the spray method; remove the Pump And Valve Casting Part after the water cooling, reduce the amount of deformation; remove the Pump And Valve Casting Part when the light to reduce the external deformation.
The presence of inherent defects in the Pump And Valve Casting Part, when used in the equipment, will bring unpredictable production risks, not only will shorten the service life, there will be security incidents.
Analysis and research on the defects of Pump And Valve Casting Part is one of the key technologies to improve the yield of Pump And Valve Casting Part. However, its difficulty is not small. Mainly in: ① involved in a wide range of knowledge, such as alloy, casting process, modeling materials, casting equipment and production process testing and other aspects of knowledge. ②Pump And Valve Casting Part The cause of the formation of defects, a defect can be caused by a variety of reasons, and one cause may cause several defects. ③ constraints of technical measures, such as the use of a measure, can prevent a type of defects, but may lead to another defect. ④ influencing factors difficult to control, such as raw material quality, air temperature and humidity.
Production of Pump And Valve Casting Part of the enterprise, its business goal is to achieve the maximum profit. To this end, in the production process, as much as possible to improve the pump and Valve Casting Part yield. The yield of Pump And Valve Casting Part is the percentage of the total weight of the pump and the total weight of the metal charge.
Place the penetrant on the surface of the cleaned workpiece, penetrate into the cracks at the surface of the Pump And Valve Casting Part; then remove the excess penetrant and apply a thin layer of developer or fluorescent material; Under the action, the cracks in the penetration agent out. If a developer is used, a certain color is displayed under the light, such as a red dye, and the defect is red. If a fluorescent substance is added, it is bright yellowish green under ultraviolet light.
Pump and Valve Casting Part of the penetration test photos. As the fluorescent camera can not take pictures with the general camera, so in the Pump And Valve Casting Part of the defects, with a marker stroke on the color. There is a mark in the photo, which is the defect of Pump And Valve Casting Part.