Rolling Mill Servo Cylinder - China

3 - Manufacturing capability and cylinder size range

3.1 Cylinder bore diameter : max ? 1200mm

3.2 Cylinder length : 10Meter

3.3 Max lifting capability : 50 Tons

4 - Manufacturing and inspection

4.1 - Cylinder tube size and choice

4.1.1 According to the cylinder pressure and inside diameter size , different steel tube Would be choosed .

1 - ID ≤ 300mm , cold rolled precision seamless tube would be choosed

2 - 300mm≤ ID ≤ 500mm , hot rolled seamless tube would be choosed

3 - 500mm≤ ID ≤ 1000mm, forged tube would be choosed

4.1.2 Cylinder tube steel grade : SAE1020 , SAE1045 , 27SiMn , S355JR , S355J2G3

St52- 3 , SUS304 , SUS316L etc .



4.1.3 Cylinder tube inside boring and honing , roughness R0.2- R0.3,

4.1.4 Cylinder tube inside chromating : if necessary , tube inside chromating could be applied

.

4.2 Piston rod is a very important part for hydraulic cylinder .

4.2.1 Piston rod steel grade : SAE1045, 42CrMo4, SUS410 , SUS420, SUS304, SUS316L

4.2.2 Piston rod chromating and surface hardness .

Eternal company ensure that every piece piston rod would be surface hardened before chromating ,

surface hardness is HRC55~60 , Chromating film thickness is 0.03~0.04mm if there is no other specific

requirements .

4.3 Seal ring and O ring

According to the customers’ requirements and working condition , eternal company would choose suitable

seal ring kit , seal ring brand include : Parker , Merkel , NOK , Guangzhou Rubber institute , Taiwan brand etc .

Eternal company would supply suitable seal solution for their customer so that hydraulic cylinder has more

lifetime , easy maintenance and simple repairing .

4.4 Tube and flange welding

The welding on cylinder tube and flange would be Ultrasonic tested every time , the welding seam would be

cleaned before machining .

Eternal company ensure that every welding seam has no any leak during lifetime

4.5 Assembly and pressure test

Before hydraulic cylinder is assemblied , every spare parts would be measured and cleaned .

After hydraulic

cylinder is assemblied , pressure test would be carried out one By one , eternal company ensure that testing

pressure is higher 30% - 50% than working pressure , and pressure holding time 30~60 minutes is necessary .

Every piece hydraulic cylinder must be tested completely without any leak .

4.6 Painting and storage .

After hydraulic cylinder pass through pressure test , painting is necessary .

Company Contact:

• Posted By: JIANGYIN ETERNAL HEAVY INDUSTRY

• Phone: 86051080628100

• Address: No.68 Wanquan Road,Shanquan Village,Zhouzhuang To, Jiangyin , China

• Email:

• Website: http://www.eternalmetal.com

• Business Description: Jiangyin Eternal Heavy Industry Co., Ltd is dedicated in designing and manufacturing all kinds of heavy duty hydraulic cylinders and high accuracy AGC servo cylinders.
  
  Our hydraulic cylinders are used in various fields such as Metal forming machinery, Metallurgy machinery, Mining machinery, construction machinery, Hydro project, etc.
  
  We have gained ten items of national practical new type patents for our hydraulic cylinders.
  
  Our company own full set of cylinder processing facilities and test equipments.
  
  Cylinder facilities including 13M CNC Honing Machine, 8M Horizontal Lathe, 13M Deep Hole Boring Machine, vertical CNC machining center, display boring and milling machine, frame type CNC machining center, CNC lathe, CNC flame cutting machine, etc.
  
  Test equipments including Intelligent pressure test bed, UT defect detector, Magnetic defect detector, Layer thickness meter, etc.
  
  Max cylinder bore of our cylinders is 1000mm while the max cylinder diameter is 12 meter, and the max test pressure could reach to 50MPa.
  
  Our hydraulic oil cylinders have been exported to many other countries such as Italy, American, Malaysia, Pakistan, Indonesia, etc.
  
  And win good reputation from our customers.
  
  ETERNAL welcome you to cooperate with us.