Shock struts powder Metallurgy Parts ( piston , base valve , rod guide ) for car and motorcycle

Products Details

Our factory located in China , Ningbo City . Here is some video of our factory production line . Max Auto Parts ltd is China top 2 manufacturers in shock struts ,Shock absorber damper industrial . The Sintered parts piston , base valve and rod guide play important role in shock absorber , It is not a secret that in the past some China factories not care about the quality , that caused many problem , in this situation , our factory by improve technical , changing the machines , the precision and quality have achieve the world top shock absorber manufacturer’s approve , like Bilstein ,  VW . Now our factory have got the IATF TS16949 certificate . 1.Piston, bottom valve, rod guide made by powder metallurgy technology.Using fe-c-cu powder, the mould is pressed, sintered and machined. 2.Product features: The piston and the bottom valve mainly provide damping for the shock absorber ,rod guide mainly guide for the movement of piston rod. Technological process: mixing powder - forming - sintering - cleaning -Steam treatment - Bending-Press bushing-Appearance inspection, packing Mixing powder: Fe - C - Cu powder by high density sieve to remove impurities, automatic blending machine 360 ° rotating more than 4 hours, make the material mix evenly Molding: precision mould with automatic CNC hydraulic press to ensure the density of all parts meet the process requirements after pressing. Sintering: the product is controlled by the net belt type sintering furnace, which ensures the mechanical properties and hardness of the products to meet the technical requirements. Oil immersion: place the product in a high pressure vessel so that the oil can fully penetrate into the product's pores and avoid the rust of the later cycle. Plastic: precision mould with full automatic CNC hydraulic press, the product density and mechanical properties are further improved after pressing, and the dimensions meet the requirements of the drawing. Machining: finish the hole, groove and other details of the product. Cleaning: the mesh belt adopts ultrasonic cleaning machine to remove impurities and iron filings. Steam treatment: the product is treated by steam in the electric furnace, which improves the mechanical properties of the product, and the surface oxidation layer helps to prevent rust. Packing: the piston is covered by a fully automatic numerical control machine covering the PTFE lubrication belt. Press bushing: pressed into DU bushing. Appearance inspection, packing. 3.Specification :

Product Details

Product Name Powder Metal Sintered Part for Shock Absorber
Material (MPIF 35) FC-0205 (DIN 30910-4) Sint C10, Fe, Balance, Cu 1.5-3.9%, C 0.3-0.6%
Density 6.4-6.9 g/cm3 after steam oxidation
Hardness 60-115 HRB, loading 1 kN, diameter of ball 1/16"
Surface Treatment Steam oxidation, 2 hours, Fe3O4: 0.004-0.005mm, degree of oxidation 2-4%
Unspecified Tolerance ISO 2768 - m / H14, h14, +- IT14/2
Apperance No crumbling, cracks, exfoliation, voids, looseness, metal pitting and other defects
Process Flow Powder mixing - Forming - Sintering - Oil impregnation - Sizing - Ultrasonic cleaning - Steam oxidation - Oil impregnation - Final inspection - (+ DP4 bushing / +PTFE band) Packing
Application For automobile, motorcycle and bicycle shock absorber

Our Advantages:

1. More than current 3000 moulds ,save your mold cost 2. ISO/TS 16949:2009 certificate 3.Competitive price 4.Strictly quality control capacity of APQPFEMAMSAPPAPSPC
4.Production Facilities 09 (4) 09 (6) 模具设备 09 (7) 09 (1) Examination Facilities

09 (2) 09 (3)

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