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. Max Auto is the top manufacturer the power metallurgy sintered parts , mainly use for shock absorber components . 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.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 APQP、FEMA、MSA、PPAP、SPC |
Production Facilities
Examination Facilities
