straight seam HF welded pipe mill
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The introduction ofstraight seam HF welded pipe mill
The plate in certain width afterslitting line and stripping is unfolded and bent into pipe state. The edge ofthe steel plate is melted by making use of the proximity effect and skin effectof high frequency current. Then, the plate is extruded and welded into the pipeby extruding roller. Straight seam welded pipe mill also is called ERW mill.
The forming styles of straightseam welded pipe can be divided into roll
forming，cage forming, flexible forming, full auto flexibleforming. The mill developed by our company adopts roll forming when havingsmall diameter （Φ≤114） The cageforming is adopted when having middle or small diameter （Φ≤165）. Full auto flexible forming is adoptedwhen having large diameter（Φ≤711）.
According to the productsfunctions, straight seam welded pipe mills are divided into API model, nationalstandard model.
API model mainly produces highlevel steel pipes, such as delivery pipe of petroleum and natural gas, oil wellcasing and so on. The requirements for material and quality are very strict.The mill is equipped with section equipment and technological equipment, suchas IF annealing, air-cooled roll table, ultrasonic inspection, and highpressure hydraulic pressure testing machine, and drifter and so on.
National standard model mainlyproduces the steel pipe, such as water-gas pipe, structure pipe and so on.
- Q:Material and equipment for roll forming process
- Rolling molding is usually through upsetting a blank cold heading machine, thread rolling machine rolling after processed. The equipment for thread rolling and rolling forming includes various reciprocating flat rolling machines, planetary wire rolling machines, two cylindrical roller spinning machines and three cylindrical roller spinning machines.
- Q:Improvement in rolling forming process
- It is difficult to control the rolling process and can cause waste easily.
- Q:What is rolling forming processing?
- Ironing the surface of the workpiece with a raised micro wave crest to fill the concave micro troughs, thus changing the distribution of the peaks on the surface, and obtaining smaller surface roughness values.
- Q:What kind of material and what heat treatment are used for pressing roller (molding, feeding, cutting force, heavy load, heavy load) of sheet steel rolling machine?
- Generally speaking, to consider the use of rollers in the requirements, including: 1., good wear resistance, 2. toughness, 3., high hardness, 4. hardened layer (easy to wear after repeated repair)
- Q:What is the surface rolling forming machine process?
- Due to the rolling surface of metal plastic deformation, so that the surface microstructure of cold hardening and grain refinement, forming a dense fibrous, and the formation of residual stress, hardness and strength, so as to improve the surface wear resistance, corrosion resistance and compliance.
- Q:Introduction of roll forming process
- Not only threaded fasteners industry applications, automobiles, bicycles and other industrial sectors also use rolling forming process, processing complex shapes of parts.
- Q:Process mould for rolling forming process
- Rolling forming is more complicated and requires higher than rolling thread. The die design is based on the different shapes of the workpiece, the design of the rolling plate into a cross section or a few sections, can use synchronous type; also can use grading type.
- Q:A roll forming machine, rolling out of the length is always not up to a fixed size, not too small, that is, more than that, what is the cause?
- Maybe there is something wrong with that roller. It rolls out of the wrong angle and the size will be out of order.
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straight seam HF welded pipe mill
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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