A large number of second-hand real source, rapid integration of the entire used welded pipe production line. Installation and commissioning services can be provided at home and abroad to ensure the rapid production of qualified steel pipes.
Significance of proximity effect to the production of high frequency welded pipe machine
In addition to the skin effect, the proximity effect is another characteristic of the current during the operation of the high frequency welded pipe machine. When two adjacent conductors pass alternating current of equal magnitude and opposite direction, the current will flow on the inner surface layer adjacent to the two conductors. The outer surface layer of the conductor flows through. The proximity effect of the current makes the current in the conductor further uneven, and it is this unevenness that makes high-frequency welding.
Common used welded pipe machine sizing section welded pipe quality defects
The common quality defects of welded pipe in the sizing section of used welded pipe machine can be divided into three categories: dimensional tolerance defects, surface defects and straightness defects. According to these three types of common sizing section welded pipe quality defects are described in detail.
Adjust the forming method of the thin-walled tube of the used roll forming machine
The thin-walled tube forming adjustment of the used roll forming machine should not be limited to the forming machine, but must have an overall view and a global view. Here, a concept of generalized forming adjustment is proposed. That is, the forming adjustment is not only the adjustment of the forming machine, but also involves the welding machine, the sizing machine, the material storage (looper), the raw material, etc., which are closely related to the forming quality of the thin-walled tube.
Joint commissioning of forming section of pipe welder machine
After the roll pass and tube blank of the pipe welder machine are adjusted one by one, it cannot be said that the forming is adjusted; it can only be said that adjusting each pass and tube blank is a prerequisite for a good forming, but not Necessary and sufficient conditions. Welded pipe adjustment requires the overall concept, overall concept and system concept, and organic integration of local adjustment and overall adjustment.
Forming adjustment after roll change of cold roll forming machine
In addition to the need to change the rolls of the equipment, the general cold roll forming machine also needs to adjust the forming problems after the equipment is changed. The forming adjustment after the roll change can be divided into the adjustment of the forming bottom line and the adjustment of the forming upper roll.
Adjusting welded tube forming on used roll forming machine
Forming adjustment is the basis for used roll forming machines to adjust welded pipes; it is recognized by the industry that welded pipe adjustment is an art, among which, forming adjustment is the pearl in the art palace. Some people can't find the essentials in their entire life.
Welded tube cooling for used roll forming equipment
In the high-frequency welding process of used roll forming equipment, some of them also need to perform on-line heat treatment of the weld, during which the welded pipe absorbs a lot of heat, and about 90% of the heat is concentrated in the weld area.
Summarize the welding stress of pipe welder machine
The welded pipe stress of the pipe welder machine can be divided into forming stress, welding stress and sizing stress according to the generation area, and they affect each other; among them, the welding stress has the most significant impact on the performance of the welded pipe.
The significance of studying the heat affected zone of the used roll forming machine welding
When used roll forming machine is used to manufacture a welded pipe, a complete high-frequency welded pipe weld will appear, which is composed of a fusion zone and a heat-affected zone. The fusion zone is a narrow weld.