WENZHOU HUASHANG STEEL CO., LTD. CALL US ANYTIME
+86-577-86383608
WENZHOU HUASHANG STEEL CO., LTD. EMAIL US NOW
info@sstubecn.com
WENZHOU HUASHANG STEEL CO., LTD.
WENZHOU HUASHANG STEEL CO., LTD.
inner banner

A Method Of Bright Annealing Of Precision Steel Tubes

Precision steel tube is a kind of high precision steel tube material after cold drawing or hot rolling. Due to the precision steel tube inside and outside wall no oxide layer, withstand high pressure no leakage, high precision, high finish, cold bending no deformation, flaming, flattening no cracks and other advantages, so it is mainly used for pneumatic or hydraulic components, such as gas and oil cylinders. Precision steel tube can be both seamless and welded pipe. Here is a method of bright annealing of precision steel tubes.

1. Bright annealing can keep the appearance of precision steel tube bright, size accuracy, more and more favored by customers. Cold rolled strip annealing without surface oxidation and decarburization in protective atmosphere. The protective atmosphere consists of a single inert gas, argon or helium, and mixed gases, such as co-h2-n2-co2 (DX), n2-h2 (HNX), n2-co2-h2, etc. The composition in the mixed gas can be adjusted to make the oxidation and reduction, decarburization and carburizing speed equal in the annealing process of the strip, so as to realize the annealing without oxidation and decarburization of the strip.

2. After annealing, there is invisible oxide film on the surface of the strip so as to protect the metal surface brightness. According to the chemical reaction between furnace gas and steel and its changing rules, the protective atmosphere is prepared and applied to determine the conditions for preventing oxidation and decarburization. O2 and H2O can oxidize and decarburize the surface of strip steel. CO and CH2 can reduce the oxide layer and carburize the steel surface. H2 can also decarbonize the steel surface, although it can reduce the oxide layer. Bright annealing depends on REDOX reaction of H2O, CO2, H2 atmosphere and Fe. N2 and other inert gases are neutral protective atmosphere of steel, among which N2 is mostly used. However, oxygen atmosphere must be removed in order to have a good protective effect. Generally used N2 and H2 mixed protective atmosphere.

Welcome to order from precision steel tube supplier china - Wenzhou Huashang Steel.

Related News

  • Common Materials Of Stainless Steel Hex Tubing

    Common Materials Of Stainless Steel Hex Tubing

    March 22, 2019Hexagonal steel pipe is a solid strip of stainless steel with a hexagonal cross-section. Because of the characteristics of stainless steel hexagonal pipe, it is widely used in ocean, chemical industry...view
  • How to Choose Steel Hydraulic Tube Correctly?

    How to Choose Steel Hydraulic Tube Correctly?

    March 22, 2019Selection of steel hydraulic tube with appropriate material and sizeHydraulic tubes should be selected according to system pressure, flow rate and application environment. Attention must be paid to ...view
  • Hexagon Steel Tube

    Hexagon Steel Tube

    April 24, 2019Hexagonal steel pipe is also known as shaped steel pipe, which has octagonal tube, rhumbatron, oval tube and other shapes. Special section tube includes cross-sectional and non-circular, constant or ...view
  • What are the Elements of Selecting and Purchasing Steel Hydraulic Tubes?

    What are the Elements of Selecting and Purchasing Steel Hydraulic Tubes?

    March 22, 2019(1) Nominal diameter of hose, selection of joint type (mainly flange connection, thread connection, rapid joint connection) and the scale of metal hose, hose length.(2) Pressure, according to the prac...view
  • Classification of Boiler Tubes

    Classification of Boiler Tubes

    May 23, 2019Seamless steel tubes for boilers are referred to as boiler tubes for short. Boilers used in China are divided into domestic boilers, general industrial boilers, locomotive boilers and thermal power bo...view
  • Brief Description Of Material Specifications Of Seamless Hexagonal Tubing

    Brief Description Of Material Specifications Of Seamless Hexagonal Tubing

    March 22, 2019Hexagonal tubing is a kind of section steel, also known as hexagonal bar, bar with regular hexagonal section. The nominal size is the opposite side length S. Hexagonal tubing can be used to form vario...view

More Tubing Fittings To Consider

  • Hexagon Steel Tubing

    Hexagon Steel Tubing

    July 10, 2018Large stainless steel tube hexagon steel tube. OD: MAX106.5mm*ID MAX80mm. LENGTH: CUT TO LENGTH.view
  • Blind Flanges

    Blind Flanges

    July 10, 2018Blind flange is also called blind board, and its proper name is flange cover.view
  • Eccentric Reducer

    Eccentric Reducer

    July 10, 2018Eccentric reducer is the size of the head whose center of the circle is not on the same line.view
WENZHOU HUASHANG STEEL CO., LTD.