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[China]
Trade Verify
Address: No.168 Tonghe East Rd, Luotuo Street, Ningbo, China
Contact name:Leela
Ningbo XiaYi Electromechanical Technology Co.,Ltd. |
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Verified Suppliers
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Made By Fe C Cu Powder Metallurgy Customized Sintered Piston With PTFE Banding
Specifications:
1. Density from 6.2-6.8 g/cm3
2. Hardness: HRB 35-100
3. Steam treatment: 2H high temp steam holding time, Thickness of
Fe3O4:0.004-0.005mm
4. Full line products for shock absorber, including powder
metallurgy piston, rod guide,foot valve, PTFE band for piston, Do
bearing for rod guide.
5. PPAP III is submitted accordingly.
Physical performance for shock piston | tensile strength | More than 18MPa |
elongation @ break | More than 160% | |
shore hardness (bands) | 57 - 61 | |
density | 2.06 – 2.19 g/cm3 | |
wear | Less than 50mg | |
friction coefficient | Less than 0.2 | |
hardness (sinter piston) | HRB60-80 | |
Technical requirements for sinter piston | Raw material F50 - U3 - 66 or FC - 0208 | |
With steam treatment | ||
OD tested by digital air gauge | ||
Wave design for PTFE bands | ||
Description:
20# shock absorber piston with HRB65-80, density 6.5g/cm3, band PTFE disc on OD used in car shock absorbers
Xia Yi was found in 2005, after several years’ effort, we have achieved great success in the enterprise.
We increased our workshop this year and developed several new automatic machines which highly improve our work efficiency.
We have a technical team to develop automatic banding machine and new generation machine has improved much advantages compared with
previous ones. We improve our pressing machine and other machines to lower the cost and improve efficiency.
The detail information of the pistons:
1. Size: D20, used in automotive shock absorbers
2. Sinter piston material: Fe-C-Cu, banding material: PTFE
3. When temperature reach 100ºС, expansion ratio ≤+/-1%
4. Using the testing ring D20.6, with the shock absorber oil, max frictional force is 15N
5. Piston can get through freely of the certain size of cylinder with 2N force
6. PTFE tensile strength ≥18MPa, breaking tenacity ≥200%
7. Tight integration between piston and PTFE disc. PTFE won't fall off when working in the cylinder.
After processing performance can satisfy the following:
1) Stress cracking test 150ºС*500 hours
2) Drawing load test: 39.2 MPa*10,000cycles
3) High vilocity operation, durability test: 1,000,000 cycles
4) Regular operating durability test: 3,000,000 cycles
No band peel off or breakage after test.
Advantages:
1. Consistency in size for the same batch pistons
2. Infrared ray detect the diameter
3. Produce the PTFE disc by Xia Yi can control the quality itself
4. Enough testing machine can assure the material properties
We can use the following material to produce PTFE discs:
We can add bronze powder or carbon fiber or graphite or other fillers in PTFE
Lip design: We can design no lip, single lip or double
lip according to the customer’s demand.
Xia Yi produces shock absorber pistons with many different types. These pistons can be used in front or rear shock absorbers.
We have a strong technical team to research and develop automatic skirting machines. Only need to put PTFE discs and sinter pistons on table,
the machine will do the job to combine them together and finally get the finished PTFE banded pistons.
Applications:
Car shock absorber, Motorcycle shock absorber, Bicycle shock absorber
Competitive Advantage:
Unique material for shock piston bands
Pistons are produced by automatic banding machine can assure the consistency of the size
Complete testing equipment
Picture show:
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