| Classification of elbow produced by intermediate frequency elbow machine
Classified by material:
1) Carbon steel: ASTM/ASME A234 WPB, WPC
2) Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV
3) Stainless Steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
4) Low temperature steel: ASTM/ASME A402 WPL3-WPL6
5) High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon cryo, PVC, PPR, RFPP (increase polypropylene), etc.
Classified by production method:
Pushing, pressing, forging, casting, etc.
Classified according to manufacturing standards:
National standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.
Classified by radius of curvature:
It can be divided into long radius elbow and short radius elbow.A long radius elbow is a pipe whose radius of curvature is 1.5 times the outer diameter of the pipe, i.e. R=1.5D;A short radius elbow is one whose curvature radius is equal to the outside diameter of the pipe, i.e. R=1.0D.(D is the elbow diameter and R is the radius of curvature).
Classified by pressure grade:
SCH5S, SCH10S, SCH10, SCH20, SCH30, SCH40S, STD, SCH40, SCH60, SCH80s, XS;SCH80, SCH100, SCH120, SCH140, SCH160, XXS which are commonly used is STD and XS two.
The manufacturing process of hot push elbow machine is introduced
Hot push elbow making machine is the basic pipe fitting equipment and pipe fitting machinery of Aocheng Machinery Equipment Co., Ltd., which is widely used in the market. Its loading and unloading process is strict. The radius of pipe billet should be larger than that of forming elbow in order to ensure that the wall thickness is roughly unchanged.An elbow is a pipe fitting used at the bend of a pipe.In the whole pipe fittings used in the pipeline system, it accounts for a large proportion, about 80%.Usually, different forming processes are selected for elbow of different materials or wall thickness.
The production process of hot push bending machine has high production efficiency and small labor consumption.The elbow produced by hot push elbow machine has the advantages of beautiful appearance, uniform wall thickness and continuous operation, and is suitable for mass production. It is the main forming method of carbon steel and alloy steel elbow, and is sometimes used in the forming of stainless steel elbow of some specifications.The elbow pushing method includes cold pushing process and hot pushing process.
Hot pushed the system working principle of bend machine, the drive system on the tube billet after blanking, upper and lower mould, pipe about advancing the mold core make it fall off after bend forming, with hot bend driving method is fast by using medium frequency induction heating pipe, improve its plasticity, using two step hydraulic propulsion, horn mandrel bending hole enlargement, push the smaller the diameter of the tube billet made from large diameter bend forming process.This hot push technology features high production efficiency, many product specifications, strong continuity of production process, easy mechanization of production, high economic benefits.Has become the main production elbow method.However, when the hot push machine produces carbon steel elbow, the forming temperature of the elbow is generally controlled between 750~950 ℃, and the red hardness of the horn manger is required.
401-403.
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