How to choose and process hydraulic cylinder tubes properly?

How to choose, process, and install hydraulic cylinder tubes properly, in order to make the hydraulic line system work more energy-efficient, reliable, and have a longer life? This has become an important issue for hydraulic technologies. As one of the leading China hydraulic tube manufacturer and supplier, Datong Hydraulic specializes in manufacturing hydraulic cylinder tubes and carbon steel honed tube for many years, and has many years experience of hydraulic tube related technology and research.

This article will briefly describe the hydraulic pipe selection, processing, installation, etc., with hope to help the customers in the hydraulic system industry who are in need.

CHOOSE THE RIGHT MATERIAL AND SIZE OF HYDRAULIC TUBES

The hydraulic cylinder tubes should be selected according to the system pressure, flow and application environment. Must pay attention to the strength of the tubing whether is enough, whether the pipe diameter and the wall thickness meet the system requirements, and the inner wall of the selected steel pipe must be smooth, non-corrosive, non-oxidized skin, no clips and other defects. If any of the following problems is found on the hydraulic cylinder tubes, it cannot be used:

  1. the inner and outer walls of the hydraulic pipe have been heavily rusted;
  2. the scratch depth of the pipe body is more than 10% of the wall thickness;
  3. the surface of the pipe body is recessed to more than 20% of the pipe diameter;
  4. the wall thickness of the pipe section is uneven and the ellipticity is obvious.

In applications of medium and high pressure hydraulic systems, the seamless steel tubes are generally used, because they have the advantages as high strength, low price, and easy leak-free connection, it is widely used in hydraulic systems.

— CUTTING OF HYDRAULIC TUBING

Pipes of hydraulic systems with a diameter of less than 50mm can be cut with a wheel cutter. Pipes with a diameter of more than 50mm can be mechanically cut, such as special cutting machine tools. Manual welding and oxygen cutting methods are strictly prohibited. After cutting, the end face of the pipe and the axial center line should be kept as perpendicular as possible. The cutting surface of the pipe must be flat. The pipe must be free from burrs, oxide scales, and slag.

— BENDING OF HYDRAULIC TUBES

The bending of the pipe is preferably carried out on a mechanical or hydraulic pipe bender. General 38mm and below pipelines are cold-formed and bended in a cold state with a bender to avoid oxide scale and affect tube quality. The bends are not allowed to be bent during the production of the bends, and can be replaced by stamping elbows and other pipe fittings because deformations, wall thinning, and oxide scales are easily generated during hot bending.

Datong is a professional manufacturer in hydraulic cylinder tubes, honed tubes ,skived and roller burnished tubes,if you have any problems about hydraulic tubes, please send inquiry to email: cally@datong-hydraulic.com.

hydraulic cylinder tubes


Comments

Post a Comment

Popular posts from this blog

40CR ALLOY STEEL SPECIFICATION

  40Cr steel  is a kind of Chinese GB standard alloy steel for engineering and machinery purpose, and one of the most widely used steel grades. For 40Cr material hardness, specifications and equivalent, please see the table below. After quenching and tempering treatment, 40Cr steel has good comprehensive mechanical properties, low temperature impact toughness, low notch sensitivity, good hardenability, and high fatigue strength in cold oil. When water cooling, the complicated shape of the parts is prone to cracks, the cold bending plasticity is medium, and the cutting workability after normalizing is good, but the weldability is poor, should be preheated before welding, and is generally used in the state of quenching and tempering. DATASHEET & SPECIFICATION The tables below list 40Cr alloy steel datasheet and specification including chemical composition, properties and heat treatment, etc. 40CR STEEL CHEMICAL COMPOSITION   Chemical Composition (%) Grade C % Si Mn Cr 40Cr 0.37 – 0.4
Read more

Skiving &Roller Burnishing Tube And Honing Tube

Image
Skiving and roller burnishing tube  process provide high quality hydraulic cylinders with final sizing and creates the desired finish pattern on the interior of tubing or cylinder bores. They are used in the manufacturing of  hydraulic cylinders . Compared to honing process, they are 80-90% saving of machine time which reduces tool costs per meter of tube length and produces super finish surface, with a bore tolerance of IT8, thereby reduces the sealing wear making it ideal for pistons. The skiving tool is a multifunctional tool used in the manufacturing of hydraulic cylinders. Skiving is operated like this: Two thin chips are cut at a high feed rate (1-4 mm/rev) while the tool passes through the work piece. This cutting operation determines the finished diameter and tolerance of the hydraulic tube. Surface finish Ra= 4-10 μm (skiving) Skiving has obvious advantages compared with honing: • 80-90% saving of machine time which reduces tool costs per meter of tube length. • Produ
Read more

What is Hydraulic Ram Cylinder?

Image
  Hydraulic ram cylinders   are typically used to give vertical motion, including lifting loads in a vertical direction. Such a cylinder is also used to provide the motion in a horizontal direction but needs attention and suitable guides to guide the motion. Single-acting hydraulic cylinders that have no pistons but have large  cylinder rod s are called rams. These rams operate exactly like the conventional single acting hydraulic  cylinders. However, they use large diameter rods in place of pistons and piston seals in their designs. Thus, in place of pistons, rams have high-pressure cap-end ports. They also do not have any low-pressure rod-end ports. Rams are generally cheaper than their conventional single-acting cylinders counterparts.
Read more