NSS 1000 hours Farm Harvesting Equipment Hollow Piston Rod Hard
Chrome Plated Steel Bar 45# 40CrMo
NSS (Neutral Salt Spray test): More than 200 hours;
More than 360 hours;
More than 500 hours;
More than 100 hours;
NSS Testing Standing une-en iso9227:2017(Neutral Salt Spray test)
TUV NSS Testing Report SGS NSS Testing Report
Material :45# 42CrMo
Color :Black
NSS:Endure 500 hours
Type:Hollow/Solid Rod
Application Environment:At sea or in harsh environments Surface
hardness:＞HV860
SURFACE ROUGHNESS:Ra≤0.2 micron and Rt≤2 micro
TOLERANCES ON DIA:ISO f10 on the diameter
LENGTH:MAX 5 meter
Crafts Process Hardening Force Remove
In the whole crafts process, there are 2 times remove hardening forces: the first remove hardening force in the
heat treatment process, hardening force remove is about 80%; the second remove hardening force in the surface treatment
process, hardening force remove is about 90%-95%. Therefore, the piston rod is not easily deformed during use or
transportation.
| 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
|
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| 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 |
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Product advantages:
When the pressure oil from the rod into the cavity, effective area
of the piston cylinder extends, line to the end, effective area of
the piston of the cylinder to lend, telescopic hydraulic out of
order is from large to small in turn out, get a long working
stroke, extended cylinder effective area is smaller, faster out,
therefore, extended speed is slow and fast, the corresponding
hydraulic thrust from large to small, this thrust, speed change
law, is suitable for variety of automatic loading and unloading
machinery on the thrust and speed requirements, in the back of the
order is generally in order to retract, axial length of the
retracted shorter, less occupied space, compact structure, commonly
used in construction machinery and other walking machinery, such as
cranes, dump truck and other hydraulic systems
Applications:
The cylinders produced in DALLAST company are mainly used on:
1.Tipping vehicle;
2.Tipping trailer;
3.Tipping skip;
4.Side tipping vehicle;
5.Compressed equipment, etc.
