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Showing posts from November, 2020

What are the requirements for the quality of 4140 chrome plated steel bar ?

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  4140 chrome plated steel bar , which is a specific type of   hard chrome rod , because the material is 4140 steel, so this kind of hard chrome rod is called 4140 chrome plated steel bar. The familiarity and understanding of this product is to use the product correctly and reasonably, and further, it can have a good use effect on the use of the product. 4140 chrome plated steel bar, the product quality should meet the requirements, the specific is: the use of quality and good performance materials for manufacturing to ensure that the product has good performance and use. The product should be simple and convenient to use, and it is not easy to cause problems during use, and it is not easy to be damaged or damaged, so as to avoid frequent replacement of new ones and increase cost. The product should have a long service life over its service life. Advantages Of Our 4140 Hard Chrome Bars Precision material parts strictly according to customer&request drawing,packing and quality reque

E355 En10305-1 DIN2391 ST52 Hydraulic Cylinder Tube

  Hydraulic Cylinder Tube   is also called   cylinder barrel , usually used in the hydraulic cylinder of the Heavy Machinery, Cranes, Excavator and Forklifts.etc E355 En10305-1 DIN2391 ST52 Hydraulic Cylinder Tube Standard: EN 10305-1 Materials :E355 Technical : cold-drawn seamless Delivery Condition: BK.BKW,BK+S,GBK,NBK Straightness:  0.5mm/1m max for tubes below 3m,0.8mm/1m max for tubes between 3 to 6m, 1.2mm/1m for tubes above 6m Technology: honing & SRB(Skived and Roller Burnished).so it also names as honed tubes or  SRB tubes We design and manufacture seamless hydraulic cylinder tubes using high quality raw materials and state-of-the-art technology to ensure durability and robust performance.we mainly choose raw material from big steel factory, such as TPCO, BAO STEEL, SHA STEEL, which are best and largest raw material manufacturer in China We provide a large stock of welded tube cylinders for various industries such as agriculture and construction, as well as for waste recov

What is the bore of hydraulic cylinder

 The bore of hydraulic cylinder is how fat the cylinder is. It's the inner diameter of the cylinder housing which is also equal to the diameter of the piston inside of the cylinder (note the piston is not the piston rod which moves in and out of the cylinder). The bore size determines how much force the cylinder generates. Bigger bore sizes generate more force, and also move more slowly. Smaller bore sizes are faster and weaker. Generally the bore size is 0.5" less than the outer diameter of the cylinder . Bore sizes are generally standardized numbers like 2", 2.5", 3", 3.5", and 4" A large bore hydraulic cylinder also has better stroke lengths with more extensive pressure testing.

how is the piston rod heat treated

  Piston rod  is a connecting part that supports the piston to do work. It is mostly used in the  hydraulic cylinder  and cylinder movement execution part. It is a moving part with frequent movement and high technical requirements. Taking hydraulic cylinder as an example, it is composed of cylinder barrel, piston rod (cylinder rod), piston and end cover. The quality of its processing directly affects the life and reliability of the whole product. 1. After the heat treatment of the piston rod, the brittleness of the raw material of the piston rod was reduced to the minimum, so the toughness of the raw material of the piston rod was greatly improved. 2. After heat treatment, the impact toughness of the piston rod can be maximized under the condition of low temperature. In fact, the quality of the raw material of the piston rod can be improved from different aspects and the service life of the piston rod can be effectively extended. 3, after the piston rod heat treatment can effectively i

The Production Precess Of High Precision Seamless Cold Drawn Pipe

  High precision seamless cold drawn pipe is made by cold rolling, cold drawing or cold rolling and cold drawing. It is a unit for deep processing of hot rolled pipe or welded pipe. According to metal processing performance, pipe size, quality requirements, investment and benefits to choose different processing methods and the corresponding auxiliary procedures. The basic procedures of cold rolling and cold drawing pipe are as follows :(1) pipe material supply; the pipe material used is hot rolled finished pipe or semi-finished pipe, extrusion pipe and welding pipe; (2) Preparation of pipe materials, including inspection, baling, pickling, cleaning, flushing, neutralization, drying, lubricant application, etc.; (3) Cold working (cold rolling or cold drawing); (4) Finishing of finished products includes heat treatment, straightening, sampling, head and tail cutting, inspection (manual inspection and various defect detection), hydrostatic test, oiling, packaging, storage, etc. Differen