DALLAST Hydraulic Hollow piston Rods In Harsh Environment NSS More
240 360 580 900 Hours 40CrMo4
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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.
Application range: Marine equipment, ships, garbage trucks, harsh
environmental requirements
Double Acting Hydraulic Cylinder ,Single Acting Hydraulic Cylinder
,
Telescoping Hydraulic Cylinder
| specification | φ3-φ12 | φ16-φ25 | φ30-φ50 | φ55-φ100 | φ105-φ120 |
| Length | 200-2000 | 200-3000 | 200-5000 | 200-10000 | 1000-10000 |
| Scheduling axis hardness | HB220-280 |
| Surface hardness | >860 HV0.1 | The straightness | 0.15/1000mm |
| Accuracy | g6 grade h7 grade | Hardened layer depth | 0.8-3mm |
| Roundness tolerance |
<=0.01 | APT thickness | 10um-40um |
| Full length tolerance |
<=0.02 | The materiel | 42CrMo4 |
| Surface roughness | Ra 0.2- 0.4
|
| 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 |
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 |
|
NSSTesting Standing ISO9227:2017
· Sal solution: 50 (+/- 5) g/l of NaCl. Water is demineralized and
salt purity is 99.5%.
· Environmental temperature: 35 °C.
· pH of salt solution is 6.8.
· Volumen of salt solution is 38.4 ml/day.
· Density of salt solution is 1,030 g/cm3.
· Spraying is 1.5 (+/- 0.5) ml/h.
Test Result :NSS can endure 300 hours ;500 hours; 800 hours
SGS NSS Testing Report TUV NSSTesting Repopt
FAQ :
Q1: How to make payment?
A1: Generally speaking, 30% prepaid, the balance paid before the
shipment.
Q2: The delivery time?
A2:Within 15 days for samples.15-30 days for bulk production, which
is depend on quality, production process and so on.
Q3: What is the packing method?
A3: For small piece, we use carton box; for big piece, we use
exporting grade plywood case, or as your requirement.
Q4: How to ship?
A4: Sea freight, Air freight or International express (DHL, FEDEX,
UPS...) all are available.
Q5: What is the warranty?
A5: 12 months against B/L date.
Q6: Are you a manufacturer or trading company?
A6: Manufacturer. We are a manufacturer with 15 years history.
