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The precipitation of nearly 70 years of sheet metal processing experience has made us a leading expert in sheet metal processing equipment. As a leading company in leveling technology and the market, we supply the most complete range of high-performance precision leveling equipment to all over the world: from parts leveling machines for processing thin and thin parts to plate leveling machines for processing thick plates. The processed plates and parts are smooth and almost free of internal stress.
So in addition to our new leveling machines, our ezhong group second hand rolling machines are also very popular. High cost performance is our ultimate goal for our customers. Of course, in order to meet the needs of different customers, we also provide low-cost and cost-effective other used metal forming equipments for sale many production applications: second-hand plate rolling machines, second-hand leveling machines, sheet bending machine second hand， second-hand presses, second-hand profile bending machines, etc. Contact us to get the latest CNC machine second hand price!
-The end bearing of the work roll of the second-hand plate rolling machine adopts a rolling bearing, which has a small friction coefficient, reduces reactive power loss, and saves energy.
- Rotate the upper roller to install the encoder, you can find the rotating position of the roller, and it is convenient to find the joint of the coil.
- The lifting displacement of the lower roller and the side roller is controlled by the computer, automatically leveled, and digitally displayed on the screen, with a synchronization accuracy of 0.2mm. The rolling precision is high and the operation is convenient.
- The second hand rolling machine is equipped with a movable operating table, which is more convenient for operators to use. The touch screen displays the positions of the three work rolls, making the operator clear at a glance.
- The control system of the second hand sheet metal machine adopts an intelligent high-speed programmable controller. The system has protection functions such as man-machine dialogue, fault self-diagnosis, the intelligent judgment of operating errors, monitoring of various parts of the machine tool, logic processing, power failure memory, etc. The system has the advantages of strong anti-interference ability, long service life, low cnc machine second hand price, earthquake resistance, and stable operation.
- The sensors of the lower roller and the side roller have high accuracy, which ensures the position accuracy and realizes the position monitoring of each roller.
1. There are always n-2 deformations when the plate is leveled. When the second hand rolling machine is deformed for the first time, it should be ensured that 60% of the plate thickness is in a plastic deformation state, and the deformation of the subsequent rollers decreases successively until the elastic deformation (the deformation is zero).
2. According to the characteristics of the maximum load, the selected work roll has a large roll distance and roll diameter, and the rigidity of the second hand plate rolling machine is good and the leveling accuracy is guaranteed. Take into account the maximum and minimum plate thickness leveling. The work roll journals of this machine all adopt precise rolling mill special bearings, the friction resistance of the work roll is small, the non-slip condition is greatly improved, and the thinner steel plate can be straightened. The roller-making device adopts the technology of the German SMS company, with a large roll diameter to roll pitch ratio, which improves the strength of the work roll, reduces the blind correction zone, and improves the leveling accuracy of the workpiece. Roller journals all adopt special rolling bearings for new rolling mills, with a service life of 5 to 10 years. The second hand sheet metal machinery selection, structural design, and manufacturing of the work roll bearing coupling parts should ensure reliability and durability, and fully consider the axial and radial load and deformation of the work roll. Compared with the sliding bearing, the transmission efficiency of the steel plate bending machine is high, and the motor power can be doubled. Energy-saving; long service life, the small overturning moment of the frame, low friction resistance, with the sub-roller drive, can effectively improve the slip of the workpiece, bend thinner steel plates, and improve the leveling accuracy. The adjustment and positioning of the gap and angle of the upper and lower work rolls are accurate and efficient, and the guiding mechanism has good precision and high stability.
3. The work roll material is 60CrMoV, according to the standard requirements of "JB/T3164-2007 Roller Plate Leveling Machine Technical Conditions", quenched and tempered HBW286～321, surface hardening hardness HS85-95 (HRC56-63), hardened layer depth, work roll diameter D≤200mm is 3～5mm, D＞200mm is 6～10mm, the roughness is 0.8μm, and the dimensional tolerance reaches h6.
4. Second hand plate rolling machine work roll process: blanking → forging → normalizing after forging → rough turning → quenching and tempering → finishing turning → surface quenching → fine grinding to surface tolerance h6, surface roughness Ra0.8μm
5. After the initial and finishing processing, the work roll shall be inspected twice, and the material inspection report, heat treatment inspection report, and flaw inspection report shall be provided.
6. The working stroke of the upper work roll adopts an electronic digital display (display accuracy is ±0.1mm).
With the combination of mechanical and hydraulic screwdown device, the leveler second hand sheet metal machinery equipment has the advantages of screwdown while correcting, adjusting the screwdown amount at any time, accurately controlling the screwdown amount, and high screwdown efficiency.
The integral closed frame is adopted and the rib plates are reasonably arranged to significantly increase the stiffness of the whole CNC second hand machine.
The prestressed frame structure adopts the form of small roll distance and small roll diameter to improve the leveling quality.
The position of the straightening roll can be adjusted separately, and the reduction can be adjusted flexibly to make the reduction of each straightening roll in the best state, and the plate can be corrected under less bending times.
Second hand sheet metal machinery process control system: the computer model can set the roll gap according to the corrected steel plate thickness, width, flatness and temperature, automatically bite the plate and feed, and has the functions of overload protection and AGC bounce compensation.
Online measurement technology of force and energy parameters: Online four-way deformation and force parameter testing, display and processing during the correction of medium and heavy plate roller straightening machine through strain gauge, with alarm function.
This second hand rolling machine is widely used in industry. EZHONG sheet leveling machine has advanced technology, high leveling accuracy, wide process range, high degree of automation, and good working reliability under high strength. The application range of our second hand plate rolling machine involves aviation, shipbuilding, metallurgy, and instrumentation, stainless steel products, etc., plays an important role in the verticality, parallelism, and appearance of industrial structural parts.
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