Rolling, the offset between the offset press blanket cylinder and the plate cylinder or impression cylinder under pressure. Rolling processing is a kind of chipless processing. (Consult: Ningbo Gaoxin District Mirror Technology Co., Ltd. Zhou Gang) uses plastic deformation of metal at normal temperature to flatten the microscopic unevenness of the surface of the workpiece to change the surface structure. Rolling principle and effect
Rolling, the offset between the offset press blanket cylinder and the plate cylinder or impression cylinder under pressure.
Rolling processing is a kind of chipless processing. (Consult: Ningbo Gaoxin District Mirror Technology Co., Ltd. Zhou Gang) uses plastic deformation of metal at normal temperature to flatten the microscopic unevenness of the surface of the workpiece to change the surface structure and machinery. The purpose of the characteristics, shape and size. Therefore, this method can achieve both the finishing and strengthening purposes at the same time, which is impossible for grinding.
No matter what kind of processing method is used, there will always be fine unevenness on the surface of the part, and there will be staggered peaks and valleys.
Principle of rolling processing: It is a kind of pressure finishing process, which utilizes the cold plasticity characteristics of metal at normal temperature. It uses a rolling tool to apply a certain pressure to the surface of the workpiece to make plastic flow of the surface metal of the workpiece and fill it into the original. Residual low concave valleys, while achieving a reduction in surface roughness of the workpiece. Due to the plastic deformation of the rolled surface metal, the surface layer is cold hardened and the grain is thinned to form a dense fibrous shape, and a residual stress layer is formed, and the hardness and strength are improved, thereby improving the wear resistance and corrosion resistance of the surface of the workpiece. Sex and fit. Rolling is a non-cutting plastic working method.
Advantages No cutting technology is safe, convenient, and can accurately control precision. Several advantages:
1. Improve the surface roughness, and the roughness can reach Ra≤0.08μm.
2. Correct the roundness, the ellipticity can be ≤0.01mm.
3, improve the surface hardness, so that the deformation of the force is eliminated, the hardness is increased by HV ≥ 4 °
4. There is residual stress layer after processing to increase fatigue strength by 30%.
5, improve the quality of the coordination, reduce wear and extend the life of the parts, but the processing costs of the parts are reduced.
Application advantage
Efficient – ​​the surface can be machined to the required surface accuracy in seconds, with efficiencies of 5-20 times for grinding and 10-50 times for turning.
High quality - the mirror precision of Ra0.05-0.1um is achieved in one feed; the surface is pressed and hardened, the wear resistance and fatigue strength are improved; the surface is subjected to plastic deformation and the dimensional accuracy can be stabilized for a relatively long time.
Economy - no need for large equipment funds, land occupation, power consumption, waste disposal and other inputs; no need for professional technicians.
Convenient - can be mounted on any rotating and feeding equipment, without the need for professional training to achieve mirror accuracy.
Environmentally friendly - no chips (protecting the environment), low energy consumption.
Safety - No cutting and rolling tools have no cutting edges.
The main body of rolling is: rolling knives (also called rolling heads, rolling tools, rolling knives, squeezing knives, extrusion heads, etc.), rolling machines, etc. The principle is basically the same, you can consult: Ningbo High-tech Zone Mirror Dr. Technology Co., Ltd. Zhou Gang.
Rolling shank form: straight shank, Morse taper shank (pictured), threaded shank, BT handle, cross handle, etc. The handle is different only for the machine tool, such as: drilling machine, milling machine, lathe, boring machine , machining center, drill drill special plane (pictured) and so on. The internal structure of the rolling knives has no other changes. In order to adapt to the different workpieces, there are different size requirements. The rolling knives are basically customized according to the needs of the workpiece. To enlarge the processing range of the rolling knives, it is necessary to consider the work.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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