Brand Name : DALLAST ATP
Model Number : Model
Certification : SGS TUV
Place of Origin : CHINA
MOQ : 1
Payment Terms : T/T
Supply Ability : 100000PCS/YEAR
Delivery Time : 15-25DAYS
Packaging Details : Wooden box
Material : 45# 42CrMo
Color : Black
NSS : Endure 300;500;800hours
Type : Hollow/Solid Rod
SURFACE ROUGHNESS : Ra≤0.2 micron and Rt≤2 micro
Surface hardness : >HV850
TOLERANCES ON DIA : ISO f10 on the diameter
42CrMo Hydraulic Cylinder Piston Hollow Rods Hard Chrome Plated Steel Bar NSS 500 Hours
NSS Testing Standing une-en 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
Heat treatment
2. After quenching, put into the oil tank to cool from the box furnace
3. After cooling, the first time tempering: tempered at 640 °C and the hardness is controlled at about HRC28-32, the first time tempering cooling is used Water-cooled.
4. Straightening: The outer circle is controlled by 200 um(0.2mm) ;
straightening equipment:
three-roller straightening machine;
hydraulic straightening machine (multipoint straightening)
5. The second tempering removes the hard force, the temperature is about 480 °C, and Keep warm for 2 -2.5hours ; release 80% more or less
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 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Company Profile :
Dallast Technology Co., Ltd is a leading professional manufacturer of hydraulic cylinder more than 15 years, we are specializing in developing, designing, manufacturing, sales and after sales service of hydraulic cylinder, not only the standard but also OEM products. In order to provide better products to our customers, we make a huge investment to introduce our advanced hydraulic technology at home and abroad, such as CNC machine, automatic cylinder welding equipment, cylinder turning center, plasma cutting machine etc.
Piston Hollow Chrome Plated Rod Bar NSS 500 Hours 42CrMo 45# For Single Acting Hydraulic Ram Images |
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