Talk about Suining stainless steel processing how to do?? It's so hard!!
Release time:
2023-04-21
The difficulty of stainless steel processing mainly lies in the poor thermal conductivity of stainless steel, and the debris is easy to form a chip tumor in the tip of the knife when heated, which is the main cause of blade damage. In addition, because of the large cutting force and high cutting temperature in the processing, it has brought some difficulties to the processing, and it is often difficult to achieve satisfactory results when cutting. Let's follow Suining stainless steel processing Xiaobian to understand it ~
There are also some tips for stainless steel processing, we... First, let's share the difficulty of cutting off stainless steel!
Stainless steel cutting tips
cut φ The bar material below 40mm is generally used with a high-speed steel cutting knife, which can achieve a better cutting effect. Processing φ When the workpiece is more than 40mm, due to the lower cutting speed of stainless steel processing, it is necessary to... Rate, can use carbide cutter.
1, the blade Angle of the tool must be 0° Conditions can be ground on a tool grinder, which is. As an important point. Because when the stainless steel is cut off, the friction between the chip and the groove wall is serious, if the chip can not be rolled out vertically, it will produce the phenomenon of crushing chips, and it will hit the knife seriously. When the edge Angle is large, the effect of chip splitting measures is not ideal.
2, the radius of the tool tip arc should not be too large, too large, the auxiliary back Angle of the tool is easy to wear, probably because the thickness of the chip at the arc is reduced, easy to produce work hardening, aggravate the wear of the tool side.
3, tool wear should be timely grinding, stainless steel cutting knife grinding standards, not only according to the main back to determine, but also pay special attention to the degree of wear behind the deputy, such as the deputy back wear is too large, the friction between the tool and the slot side increases, resulting in the width of the slot narrower, so that the chip is not easy to discharge, and the tool wear is accelerated.
4, the front surface roughness of the tool should be reduced as far as possible, the surface roughness value is low, can... Adhesive wear, so that the cutting force is reduced, cutting light, practice has proved that the tool life after grinding in front of the tool is significantly higher than that without grinding.
5, grinding out a negative chamfering edge of about 0.2mm, which can reduce the phenomenon of collapsing edge during grinding and obtain better quality of cutting edge. The lower part of the knife body adopts fish maw shape to increase rigidity. The back Angle of the tool pair is grinded by the grinding wheel, the rigidity is good, and the actual back Angle is about 2°. Eg. .
Tool materials for processing stainless steel generally choose YG alloy which is not easy to produce adhesive wear, I choose YG8 with better strength, the tool width is selected according to the diameter of the rod, and the cutting speed is about 60m/min.
This tool can meet the needs of general machining. 40 ~ φ 80MM bar material can be cut off once, no need to drive the knife, processing should pay attention to the stainless steel chip is very sharp, such as the chip is too long, the feed should be back, so that the chip is broken off, so as to avoid danger, the tool should not stay on the surface of the workpiece when the tool is back, to reduce work hardening. When cutting the solid workpiece, in order to avoid the tool collapse, it can be left about 1 ~ 2mm with the hand when cutting to the center.
6, for this kind of cutting stainless steel, under normal circumstances, the wet cutting tool life is several times more than the dry cutting tool, I mainly look at the speed and cutter, the speed is not high with water, the chip out of the cutter will be red immediately, can process several living heart is clear!
The above Suining stainless steel processing sharing is here, I do not know you are satisfied with the answer to the small series? If you need to add or want to know about the place, welcome to leave a message to the editor.
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