 |
| Place of Origin: | China |
| Brand Name: | HY |
| Certification: | ISO9001:2008 |
| Minimum Order Quantity: | 5 tons |
|---|---|
| Price: | Negotiation |
| Packaging Details: | Anti rust oil to be applied on material and each rod to be packed in paper sleeve |
| Delivery Time: | 30days |
| Payment Terms: | CIF,FOB or other |
| Supply Ability: | 30tons a day |
| Product Name: | Hollow Chrome Piston Rod | Length: | 1000mm - 8000mm |
|---|---|---|---|
| Surface Treatment: | Hard Chrome Plating | Surface Roughness: | Ra≤0.2micron And Rt≤2micro |
| Surface Hardness: | 850-1150 HV (vickers 100g) | Straightness: | Not More Than 0.2 MM/M |
| High Light: | Hard Chromed Plated Hollow Piston Rods,Hollow Piston Rods For Shock Absorber,1000mm Hollow chrome piston rod |
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Hard Chromed Plated Hydraulic Hollow Piston Rods Shafts For Shock Absorber
1). Process flow of hydraulic piston rod.
Connecting rod using 35 steel, processing technology: cold-drawn forming a turning a continuous medium frequency induction hardening, a cylindrical grinding, a fine grinding cylindrical shearing section.at finishing plating chromium to hydrogen tempering shearing section.at fine grinding. In order to improve the surface quality and corrosion resistance of the piston rod, a super finishing process was added before chrome plating.
2). Piston rod plating process.
Inspection before plating – pack hanging fixture – chemical degreasing, electric lift oil – water – activation pickling – water
washing- the moment, the piston rod chromium plating, recycling water – water washing – unloading hanging fixture – inspection
Detailed Product Description
1. Material: 42CrMo4, 40Cr, CK45,ST52, 20MnV6
2. Standard length: 1000mm - 8000mm
3. Diameter: 6mm - 1000mm
4. Application: Mining machinery industry, textile / printing industry and so on
5. Condition: Chrome plated, Quenched / Tempered, Induction hardened, Q / T Induction hardened
Detailed Description
1. CHEMICAL COMPOSITION
|
Material |
C% |
Mn% |
Si% |
S% |
P% |
V% |
Cr% |
|
Ck45 |
0.42-0.50 |
0.50-0.80 |
0.04 |
0.035 |
0.035 |
|
|
|
ST52 |
0.22 |
1.6 |
0.55 |
0.035 |
0.04 |
|
|
|
20MnV6 |
0.16-0.22 |
1.30-1.70 |
0.10-0.50 |
0.035 |
0.035 |
0.10-0.20 |
|
|
42CrMo4 |
0.38-0.45 |
0.60-0.90 |
0.15-0.40 |
0.03 |
0.03 |
|
0.90-1.20 |
|
40Cr |
0.37-0.45 |
0.50-0.80 |
0.17-0.37 |
|
|
|
0.80-1.10 |
2. MECHANCIAL PROPERTIES
|
Material |
T.S N/MM2 |
Y.S N/MM2 |
E%(MIN) |
CHARPY |
CONDITION |
|
CK45 |
610 |
355 |
15 |
>41J |
NORMALIZE |
|
CK45 |
800 |
630 |
20 |
>41J |
Q + T |
|
ST52 |
500 |
355 |
22 |
|
NORMALIZE |
|
20MnV6 |
750 |
590 |
12 |
>40J |
NORMALIZE |
|
42CrMo4 |
980 |
850 |
14 |
>47J |
Q + T |
|
40Cr |
1000 |
800 |
10 |
|
Q + T |
3. SUPPLY CONDITION
Ground and chrome plated
4. CHROME THICKNESS
20 to 30 micron
5. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micro
6. TOLERANCES ON DIA
ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. STRAIGHTNESS
≤0.2MM/M
9. SURFACE HARDNESS
850-1150HV (vickers 100g)
10.COHESION
No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling
in water)
11 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
12 CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-72hours
Results evaluation according to ISO 4540 RATING 7-10
13. WELDABILITY
Good
14. PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
15. CERTIFICATE
All certificate related with material heat treatment and plating is required
Contact Person: Miss. Patty
Tel: 8613921505262
Fax: 86-510-83952939
