16Mn large diameter reelThe operation is simple and can be designed

announcer:hp709HP180518493 release time:2022-02-22 14:14:09

Separate & ldquo; Hot coil & rdquo; The word is a noun, which is the abbreviation of hot rolled coil, and the hot coil used here to connect with thick wall steel pipe is a verb, indicating a kind of behavior.

The volume of coiled pipe, Q235B coiled pipe, Q345B coiled pipe, large-diameter thin-wall coiled pipe, large-diameter thick wall coiled pipe,Q345B welded steel pipe, stainless steel coiled pipe, L360 coiled pipe, 16Mn coiled pipe and other special products have increased accordingly. With the development of domestic economic situation and the acceleration of welding and casting trend, the advantages of NC cutting have been gradually recognized. NC cutting not only greatly improves the rate of plate and product quality, but also improves the working environment and labor efficiency. At present, the NC cutting machines used in the thick wall coil processing industry are mainly flame and ordinary plasma cutting machines, but pure flame cutting can not meet the needs of modern production. At present, most NC cutting machines are NC plasma cutting machines. This type of cutting machine can meet the needs of thick wall coiled pipe plate processing and thick wall coiled pipe parts processing so the demand will be greater and greater, but there is still a very obvious gap with foreign countries, which is mainly reflected in: 90% of the developed thick wall coiled pipe processing industry is digital control cutting machine, and only 10% is manual cutting; The CNC cutting machine only accounts for part of the total blanking. 10%, of which the proportion of NC plasma cutting is small. In industrial production the thermal cutting of thick wall coiled pipe generally includes gas cutting, plasma cutting, laser cutting and so on. Among them, plasma cutting has a wider cutting range than gas cutting More efficient. Fine plasma cutting technology is close to laser cutting in material cutting surface quality, since the successful development of the United States in the mid-1950s, plasma cutting has developed rapidly. With the rapid development of computer and digital technology, NC cutting is also developing, which improves the machining accuracy. It shows great advantages in saving materials and improving labor productivity. This leads to the development of plasma cutting technology from manual or semi-automatic to NC, which has become one of the main directions of NC cutting technology. NC plasma cutting technology is a set of high-tech technologies such as NC technology, plasma cutting technology and inverter power supply technology. Its development is based on the common progress of computer, plasma arc characteristic research, power electronics and other disciplines. The CNC cutting technology began in the 1980s, and the CNC plasma cutting technology was later. However, recently, some domestic universities, research institutes and manufacturers have studied NC plasma cutting technology and gradually developed and produced various specifications of NC plasma cutting equipment, narrowing the gap of foreign advanced technology. 20 old brands, price

.The principle of encoder length measurement is to install an encoder at the oil cylinder, the oil cylinder pushes the welded steel pipe to move on the roller table, and a series of photoelectric switches with equal distance are installed on the other side. When the steel pipe is pushed by the oil cylinder and the pipe end touches the photoelectric switch, the distance of the oil cylinder can be converted from the recorded encoder reading, so that the length of the steel pipe can be calculated.

It should be noted that in practice, it is difficult to achieve the ideal proportion of metal sand and metal ball in the rinsing agent, because the hard and brittle metal sand has a higher crushing rate than the metal ball. For this reason, the mixture should be sampled continuously and the mixed rinse should be tested. According to the particle size distribution, the new rinse agent is added to the cleaning machine, and the amount of metal sand is usually the same in the new rinse agent.

.Thick wall coiled pipe is usually higher than dn450. Thick wall coiled pipe is sometimes two welds. Why does this happen mainly because of raw material problems and equipment processing problems? The steel plate with the required width of welded pipe required by the customer is usually not produced by the steel plant, so two plates need to be welded, so the weld will occur. The main problem of thick wall coiled pipe is welding. As long as flaw detection can be carried out the requirements related to delivery are wider than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector. The longitudinal weld on the same cylindrical part of the coiled pipe shall not be greater than 2. When the coil pipe is butt welded, the corresponding parts shall be flushed to. When the nominal diameter is larger than the inner seal, the bottom seal welding shall be carried out. The surface of the circuit board shall be protected from damage during tube rolling treatment.

Because the coiled steel pipe plays an important role in construction, railway construction and bridge construction, its quality standards are also more important. If you don't understand the quality specifications and standards, it is easy to have an impact. Generally, we can purchase from these aspects.

Thick wall coiled pipe is usually higher than dn450. Thick wall coiled pipe is sometimes two welds. Why does this happen mainly because of raw material problems and equipment processing problems? The steel plate with the required width of welded pipe required by the customer is usually not produced by the steel plant, so two plates need to be welded, so the weld will occur. The main problem of thick wall coiled pipe is welding. As long as flaw detection can be carried out, the requirements related to delivery are wider than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector. The longitudinal weld on the same cylindrical part of the coiled pipe shall not be greater than 2. When the coil pipe is butt welded, the corresponding parts shall be flushed to. When the nominal diameter is larger than the inner seal, the round pipe shall be cut by a cutter and cut into a blank with a length of about meters. However the production process of thick wall coiled pipe can be divided into cold drawing and hot rolling. The production process of cold-rolled seamless steel pipe is generally more complex than hot rolling. Roll sizing test shall be carried out for the pipe blank first. If the surface does not respond to the crack, when entering the annealing process, acid shall be used for annealing and attention shall be paid to whether a large number of bubbles are generated on the surface. If a large number of bubbles are generated, it indicates that the quality of steel pipe can not meet the response standard. In appearance, the cold-rolled seamless steel pipe is shorter than the hot-rolled seamless steel pipe, and its wall thickness is generally smaller than that of the hot-rolled seamless steel pipe, but the surface is brighter than that of the thick wall seamless steel pipe. There is not too much roughness on the surface, and there are not too many burrs in the diameter. The thick wall coiled pipe is a powerful manufacturer, quotation, honest operation, genuine and of the same quality. The thick wall coiled pipe is available from stock, with complete specifications,. The wall thickness of coiled pipe is 20mm and the outer diameter is 450-3000mm. It is rolled, welded, formed butted, removed and reinforced directly from the steel plate. Coil processing time is short and delivery is fast.

In order to improve the corrosion effect of steel plate coil, thick wall coil sometimes has two welds. Why does this happen? It is mainly due to raw material problems and equipment processing problems. The width of the welded pipe required by the customer is not produced by the steel plant, so the two plates must be welded, so this kind of weld occurs. The main problem of thick wall coiled pipe is welding. As long as the flaw detection can be carried out, the delivery can be carried out. The relevant requirements are broader than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector, and the longitudinal weld on the same cylinder section of coiled pipe should not be more than two. The group of butt welds of coiled pipe shall be flush. When the nominal diameter is greater than, back sealing welding shall be carried out in the pipe. During pipe rolling processing, the surface damage of the plate shall be prevented. High cost. Hot rolled thick wall coiled pipe is widely used: oil cylinder, hydraulic pressure, bridge, roller, etc& amp; amp; quot; Compared with seamless steel pipe, thick wall coil has the disadvantages of low cost,20# thick wall coiled pipe, rapid delivery, breaking the fixed specification of seamless steel pipe, etc. Quality department 3 editing of welding process and welded pipe type thick wall coiled pipe is made of steel plate or steel strip after bending and then welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose, galvanized welded pipe, oxygen blowing welded pipe, metric welded pipe,20# large diameter welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, electric welding special-shaped pipe and spiral welded pipe. Objective knowledge packaging strategy thick wall steel plate coil - thick wall steel plate coil price thick wall coil is formed by bending steel plate or steel strip, with the electrical model of 031 inspection 8517611 standard, and then made by high-frequency welding and submerged arc welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose, it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welded thin-walled pipe, electric welded special-shaped pipe and spiral welded pipe, coil, Q235B coil, Q345B coil, large-diameter thin-walled coil, large-diameter thick-walled coil, stainless steel coil, L360 coil and 16Mn coil, Quality. Preferential activities are in progress. Welcome to consult. Large diameter welded pipe, etc. People often work on the outer wall of the steel pipe, so how to calculate the cost of steel pipe rolling?

In general, the process of expanding the diameter of coiled pipe products can be divided into three stages. It is the preliminary rounding stage: the sector blocks are opened until all the sector blocks reach the steel pipe. At this time, the radius of each point in the steel pipe is almost the same within the step range, and the steel pipe is preliminarily rounded. The second stage is the nominal inner diameter stage: the sector starts to reduce the movement speed from the front position until it reaches the required position, which is the inner circumference position of the finished pipe with quality requirements.

Safety and health.After pushing, the elbows should be formed in this hot state, because some elbows will be distorted after improper handling, which is not allowed. In addition, after pushing the head, the outer diameter of the front end is usually large and formed by the forming die. The forming die is actually a press. It must have a set of molds, two semi arcs, one on each side. The outer diameter after forming reaches the size of the finished product.

API seamless steel pipe is expressed as outer diameter, which is mainly used for machining, coal mine, cold rolled thick wall seamless steel pipe, cold drawn thick wall seamless steel pipe, thick wall seamless steel pipe, stainless steel seamless steel pipe for pipe jacking structure (GB / t14975-199) are widely used in corrosion-resistant pipes and structural members in chemical, petroleum, light textile, food, machinery and other industries, and stainless steel hot rolled (,) and cold drawn (rolled) Seamless stainless steel pipe for fluid transportation (GB / t14976-199) is a hot-rolled (extruded) and cold drawn (rolled) seamless steel pipe made of stainless steel for fluid transportation.

Diameter of rolled steel pipe: sometimes the diameter of the demand plan is different from that of the supplier.


16Mn large diameter reelThe operation is simple and can be designed



The second stage is called the complex compensation stage, the sector of the coiled pipe will gradually reduce its speed until it reaches the required position which is the inner circumference position of the steel pipe before complex required by the process design. The second stage is the pressure maintaining and stability stage: the sector block remains stationary at the inner circumference of the steel pipe before re assembly, which is the pressure maintaining and stability stage required by the equipment and expanding process.

analysis.When the nominal diameter is greater than or equal to 600mm, back welding shall be carried out in the pipe.

Camera length measurement uses image processing technology to measure the length of straight seam steel pipe. The principle is that a series of equal distance photoelectric switches are installed on one section of the reel conveying roller, and a light source and camera are added to the other section. When the thick wall pipe passes through this area, the length of the steel pipe can be determined according to the position of the photoelectric switch camera on the screen.

The steel plate coil adopts the secondary forming process. When rolling, first bend both ends of the steel plate, and the diameter shall be less than the diameter of the coiled pipe. Then adjust the bed pressure rolling two to three times steel pipe coiled pipe welding and strengthening the rolling pipe joint, long-term rolling pipe, Q235B coil pipe, Q345B coil pipe, large diameter thin wall tube, large diameter heavy wall coil pipe, L360 coil pipe, 16MN coil pipe and other brand products, designated products are complete, quality assurance. Then transported to the welding platform for welding.

.The second stage is called the complex compensation stage, that is, the sector of the coiled pipe will gradually reduce its speed until it reaches the required position, which is the inner circumference position of the steel pipe before complex required by the process design. The second stage is the pressure maintaining and stability stage: the sector block remains stationary at the inner circumference of the steel pipe before re assembly, all the welds are tested by on-line continuous ultrasonic automatic flaw detector to ensure the NDT coverage of the welds. If there are defects, it will automatically alarm and spray marks, and the production will adjust the process parameters at any time to eliminate the defects in time.

, low cost. The rolling pipe is mainly used for pipes, billboards, columns