Chrome Plating Micro Alloy Steel Piston Rod With High Properties
Product Description
1. The directly turning non-quenched and tempered steel products
are developed on the basis of the
proprietary technology of the control rolling and cooling for substituting quenched and tempered
42CrMo4, 40Cr and CK45 with a variety of mechanical performance requirements.
2. the mechanical property is correspond to quenched and tempered
42CrMo4, 40Cr and CK45 or over
them and very uniform on the whole cross section.
3. It is mainly used for manufacturing injuection molding machine
draglink, engineering machinery push
rod and hydraulic prop with the feature that hardened and tempered
steel mechanical property
needless quenched and tempered process.
4. Turning performance: Turning performance is commensurate to
42CrMo4, 40Cr and CK45 or be
superior to them.
5. Energy conservation: Production no quenched and tempered process
greatly saves the energy
consumption.
6. Environments protection: Production no quenched and tempered
process meets the requirements of
environmental protection.
Detailed Description
1. MATERIAL: HY4700, HY4520
2. CHEMICAL COMPOSITION(%)
Material | C% | Mn% | Si% | S% | P% | V% | Ni | Cr% | Mo | Cu |
HY4700 | 0.38-0.45 | 1.20 ~1.60 | 0.30~0.50 | ≤0.035 | ≤0.020 | 0.05～0.15 | ≤0.25 | 0.10～0.20 | ≤0.15 | 0.25 |
HY4520 | 0.40 ~0.48 | 0.80 ~1.40 | 0.15 ~0.35 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 | ≤0.15 | ≤0.25 |
3. MECHANICAL PROPERTIES
Material | MECHANICAL PROPERTIES | Surface hardness(HBW) |
Rm(MPa) | Rel(MPa) | A% | Z% | KU2(J) |
|
HY4700 | Φ35 - Φ100 | 900 - 1100 | ≥650 | ≥16 | ≥35 | ≥39 | 270-340 |
＞Φ100 - Φ140 | 850 - 950 | ≥600 | ≥16 | ≥35 | ≥39 | 270-340 |
HY4520 | Φ40 - Φ100 | 750 - 900 | ≥520 | ≥19 | ≥40 | ≥39 | 230-290 |
＞Φ100～Φ140 | 750 - 900 | ≥520 | ≥17 | ≥35 | ≥39 | 230-290 |
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4. SUPPLY CONDITION
Ground and chrome plated
5. CHROME THICKNESS
20 to 30 micron
6. TOLERANCES ON DIA
ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
9 .SURFACE HARDNESS
850-1150HV (vickers 100g)
10. STRAIGHTNESS
≤0.2MM/M
11. COHESION
No craks,breaking or detaching after thermic shock(warming up at
300 celsius degrees
and cooling in water)
12 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to
ISO 4540 rating 8-10
13. WELDABILITY
Good
14. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10
15. PACKING
Anti rust oil to be applied on material and each rod to be packed
in paper sleeve
16. CERTIFICATE
All certificate related with material heat treatment and plating is
required
