The CRM precision strip rolling mill machine process includes mold making, bar heating, finishing cold rolling, finishing and straightening and other cold rolled process processes. Compared with the existing rough rolling technology of cross wedge rolling, the material saving rate is increased by more than 10%, and the comprehensive mechanical properties of the parts are increased by more than 5%. The tolerance zone of the finished product produced by precision rolling is about 1/2 smaller than the international standard high-precision tolerance. The rolled bar and strip can be directly ground without drawing or cutting. If it is omitted, the yield is increased, thereby greatly reducing the cost. Therefore, the demand for precision rolled steel is increasing year by year, especially for some high-grade alloy steel, the cost of raw materials is high, and precision rolling has its special significance.
Introduction of CRM strip rolling machine
At present, there are many small tandem rolling mills in our factory. The finished and pre-forming cold rolling mills have been changed to short-stress line high-rigidity strip rolling mills or pre-stressed strip rolling mills machine, which has improved the accuracy of rolling materials by one level, but this is different from the international use of precision rolling technology. There is still a considerable gap between the physical standards that are rolled out. The tolerance zone of the finished product produced by precision rolling is about 1/2 smaller than the international standard high-precision tolerance. The rolled bar and wire can be directly ground without drawing or cutting. If it is omitted, the yield is increased, thereby greatly reducing the cost. Therefore, the demand for precision rolled steel is increasing year by year, especially for some high-grade alloy steel, the cost of raw materials is high, and precision rolling has its special significance.
Precision strip rolling process, which includes mold making, bar heating, finishing rolling, finishing and straightening and other processes. Compared with the existing rough rolling technology of cross wedge rolling, the material saving rate is increased by more than 10%, the comprehensive mechanical properties of the parts are increased by more than 5%, the straightness of the product is controlled within 0.2mm-0.4mm, and the product curvature is increased by 25% is reduced to 3% after one straightening. The special rolling curve designed and manufactured solves the rolling difficulty of the dense asymmetric concave step shaft, so that the cam side and journal of the camshaft can be achieved without machining. skills requirement
CRM strip rolling machine Features
As an important aspect of online product quality control, bar and wire strip rod reduction and sizing unit is also more and more valued by manufacturers. Alloy steel bars are usually precision rolled by reducing and sizing units. The bar reducing and sizing unit is usually 3 to 5 frames, the first two frames are used for the extension and deformation of the rolling stock, and the last few frames are used for the rolling stock sizing. The pass type of the 4-stand rolling mill is an ellipse-circle-circle-circle system. After using the reducing and sizing unit, the dimensional tolerance of the product can be controlled within ±0.1mm, or even ±0.05mm, and the ovality can be controlled within 60% to 80%, which can reach the tolerance value that can be achieved during secondary cold processing. Therefore, Some machining steps can be omitted or simplified.
Tension between racks
To achieve high dimensional accuracy, tension-free rolling should be used. If it is a continuous rolling mill, tension-free control or micro-tension control should be implemented. Smaller rolled pieces are rolled by loop control in some intermediate rolling and finishing mills. In the rough rolling mill and some of the intermediate rolling mills, the control method of indirectly calculating the tension according to the rolling load, motor torque, etc., or directly measuring the tension added to the rolling mill Tension control method to achieve the purpose of micro tension strip rolling machine

About our company
Sky Bluer Environmental Technology Co. Ltd is manufacture specialized in precision cold rolling mills and systems for metal shaping, which mainly includes micro precision cold rolling mills,strip rolling machine,wire flatten mill,strip flattening mills,flat strip rolling machine,cold rolled wire drawing machine with Germany Technology, rolling cassettes, Turk heads,universal rolling mills, and precision rollers. We have independently R&D rectangular spring wire, flat wire rolling mill, volute spiral spring continuous rolling line, valve spring rolling mill, and triangular wire rolling mill to replace brand Europe/USA/Japan cold rolling mills.
By the new method of Self-made cold rolling mill combined with drawing rolling die, our concept will be adjusted to this new method it guarantees for the most cost-saving quality improvement of your products. better quality in evenness and finishing, the straightness up to 0.5mm/m, thickness and width tolerance can be accurate down to within 0.005mm.Active introduction of Brand Japan small high-precision roll processing and grinding technology, the roundness tolerance is less than 0.001mm., finishing is 0.02μm.
Service Commitment: What we provide is not only equipment, but also technology and service. We provide users with free-of-charge for shaped wire proofing and hole design.