To explore the selection range of the water pump bearing material

To explore the selection range of the water pump bearing material pumps are used in industrial production, as in life have his shadow, water pump bearing is an important part of it. So about the material of water pump bearing should choose which? Do you want to know? Under different loading amount of wear and friction coefficient of ptfe load/mg/N wear coefficient of friction. By filling the ptfe graphite, molybdenum disulfide, bronze powder and glass fiber, etc. , to improve the physical properties and mechanical properties of the material. Bronze powder filling ptfe tensile strength for 18 m38mpa, bending strength of 20 mpa, the compression strength of 16. 5 m20。 0 mpa, hardness HB for 2535, the friction coefficient is 0. 030. 15, carrying capacity is 100 mpa, the service life of 15000 h, 2 for ptfe. Three times. Plastic copper alloy design and manufacture and application of water bearing, plastic copper alloy water bearing structure and dimension accuracy when material was determined, the geometric shape, size, precision of the bearing and its manufacturing process is also the designer must consider the question, such as water bearing length to diameter ratio and the determination of wall thickness. Bearing length to diameter ratio D/L = 1. 21. 5 for the best, so that heat is easy to spread, and the coefficient of friction is minimal. Water bearing wall thickness to ensure that both strength and water bearing license of the molding process and to ensure the internal deformation caused by the assembly without, at the same time there is enough tension in the bearing hole. By the experiment to determine the thickness of the inner diameter of 0. 20. Five times more appropriate, and opened a rectilinear on water bearing wall lubrication groove 3, its groove 120 ° evenly distributed, the abrasive dust and mud of getting rid of this shape for ideal. Determine the tolerance clearance of plastic fitting clearance of copper alloy bearing water cannot adopt generally metal bearing lubrication theory to calculate, suggest GB1801 - according to the national standards 79 and reference data to determine. Plastic copper alloy water bearing diameter of axle design with mm diameter of axle clearance interval quantity interval. The application of plastic water copper alloy bearing the experiment is made on the ZL type series vertical multistage installed plastic copper alloy bearing ( Water bearing with surface chromium layer 0. 015 mm axis sheath under the match) , continuous operation 24 h after water bearing no wear, wear axis sheath 0. 4mm. Practice proves that the model of copper alloy wear-resisting performance is good, water bearing lubrication performance is good, and has good mechanical properties, thermal conductivity compared with pure ptfe increased 5 times, its life is 23 times of rubber bearing. Conclusion 1) Plastic copper alloy is a kind of excellent bearing material, used for water bearing is entirely feasible; 2) In order to improve the service life of the mold copper alloy water bearing, the surface roughness should be controlled in 816 microns; 3) Plastic copper alloy bearing water can only use cold press sintering molding, and cannot use injection molding. Jiaxing bearing co. , LTD. Is a ( ） A specialized production automobile water pump bearings, shaft bearings, water pump bearings professional manufacturers, the company strictly in accordance with the quality of customer requirements and time to provide error-free, with cost-effective products and services, welcome to inquire. A: on what are needle roller bearing damage killer next article: car cross the correct maintenance of the needle roller bearing method related tags: water pump bearings, water pump bearings, auto water pump bearing related news which cases will fever auto water pump bearing thermal and bearing performance of engine cooling system of key parts of automotive water pump bearing water pump bearing why use general auto water pump bearing grease appears channeling dynamic circumstance how to deal with related products