Sliding bearing bush of materials and structures Abstract: Sheet Metal submit a design 3Cr13 stainless steel parts car stringer processing technology and equipment in the automatic lathe turning, select the thread cutting compound cycle G76 command coordinate system and direction of movement About gantry EDM wire cutting decoding simulation program design is based on UG software CAD / CAM functionality of the design and manufacture of machine tools of the new mouse Xiazuo of Association: towards quality service brand associations continue its efforts to the inverter principle introduced Seiko introduced the low-power high ripple rejection voltage regulator device rolling wheel sand mixer operating procedures bearing ultra-precision machine tool equipment developed by the breakthrough in metal cutting fluid waste processing CITIC Heavy Machinery and Qi a machine made of heavy double column vertical lathe, cylinder head valve seat and conduit holes processing technology AC610M of The full resolution of the / AC630M precision turning grades typical CAM platform CNC Milling programming function contrast application world machine tool industry development direction of how to solve the Chinese Pro / E Drawings Chinese characters to AutoCAD garbage problem detection technology in the automotive industry prospects structural material bearing corrosion The friction and wear-resistant lubricating strength capacity alloy bush bearing directly connecting the part to withstand the load relative motion to reduce friction and wear of the bearing material to the various requirements of the requirements of the friction coefficient of friction wear to meet the following has sufficient compressive strength fatigue strength to withstand shocks bearing alloy thickness 0.0130. load speed 13mm adhesive bearing clearance is too small surface finish, poor lubrication attention to careful selection of materials to match to prevent.
Bearing on the bearing directly in contact with the shaft part, load bearing and shaft relative motion. Reduce friction, wear, put forward various demands of the bush material, in addition to the requirements of the small coefficient of friction between the friction pair, wear outside should also meet the following:
One should have sufficient compressive strength, fatigue strength and resilience. The thickness of the bearing alloy (0.013-0.13) mm.
2 anti-adhesion. When the load, high speed, the bearing clearance is too small, high surface finish, poor lubrication, pay attention to the carefully selected to match the material to prevent adhesive wear of the friction pair glued.
Adaptability and the ability to accommodate the foreign body. Low hardness, good plasticity, and low coefficient of elasticity of the material has good adaptability and the ability to accommodate the foreign body.
(4) good corrosion resistance, low price, enough sources. From the oxidation of colloidal sediments, the bush material corrosion.
One, commonly used materials
Bearings and bearing liner commonly used material is divided into two major categories of metal materials and non-metallic materials.
Metallic materials:
1 Cast Iron
Ordinary gray cast iron, cast iron, ductile iron
Applicable in the low-speed light-load, or open the drive bearings
Mechanism: the material in flake or spheroidal graphite composition, covering the surface graphite layer of lubricant.
(2) bearing alloy
ZChSnSb10-corrosion resistance, the ability of anti-glue, combined with the steel back in prison, your price for high-speed overload, such as rolling stock.
ZChPbSb16-16-2 anti-gluing ability, differential thermal expansion, crisp suitable for medium speed.
Babbitt good wear resistance, anti-glue, thermal conductivity, the most suitable to do the bush material.
3 Bronze
ZCuPb30 by casting or sintering is attached to the surface of one pair of metal Steel Bearing, excellent anti-gluing properties
ZCuSn10-l friction reduction and wear resistance are good, the best bearing materials, high-speed heavy
Such material hardness and strength than the alloy of Pap, corrosion resistance, but the running-matching journal requires a higher hardness and smoothness, suitable for medium-speed overload.
(4) aluminum alloy - bimetal
Low-tin alloy, containing Sn0.5%
High tin aluminum alloys, including Sn20%, locomotive diesel engines
Such materials, high strength, corrosion resistance, good thermal conductivity.
5 of ceramic metal
Iron 10 graphite or copper powder ten stone Toner → compaction → sintering to form a pore structure, porosity accounted for 15 ~ 35% → immersion oil to cook → oil bearing.
This bush due to poor toughness applies only to the steady load and small and medium-speed, for the poor lubrication conditions occasions.
Non-metallic materials:
Easy running-in wear debris soft small possibility of journal affinity glued
Plastics: Bakelite, polyamide aldehyde (nylon), PTFE
Greater compressive strength, anti-adhesion and abrasion resistance, good corrosion resistance and low coefficient of friction, the increasingly widespread application, but the poor thermal conductivity, so the water lubrication, for example, roller press, hydraulic press
2 rubber
Occasions, made of hardened rubber for shaft vibration, tilt, dirty water lubrication
Second, the bearing structure
Integral
One piece casting
Split


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