Is treatment of stainless steel material difficult? That is you do not know these

Is treatment of stainless steel material difficult? That is you do not know these

At present stainless steel is applied extensively at aerospace, generate electricity equipment is made, in the industrial department such as building and food and daily life. And stainless steel data appears easily in machining a process cutting tool wears away accelerate, treatment face is whole it is sexual difference, difficult to cut bits to eliminate wait for general character problem, cycle of the treatment quality that affected part of this kind of material badly, production reachs finished cost. The metal machines small letter to machine difficulty to undertake analytic summing up in the light of stainless steel material, it is golden pink people the specific measure that provided stainless steel cutting and typical product make reference.
　
The reason of difficult treatment of stainless steel material

1, high temperature intensity is high, treatment sclerosis liability is big

Compare with general steel photograph, the intensity of stainless steel, hardness is not tall, but because contain many Cr, Ni, Mn,wait for an element, plasticity and tenacity are good, high temperature intensity is high, treatment sclerosis liability is big, accordingly, cutting load is heavy. In addition, austenite stainless steel is in cutting process, interior returns meeting separate out a few carbide, accentuated the abrade action to cutting tool.

2, cutting muscularity

Stainless steel is out of shape in the plasticity in cutting process big, especially austenite stainless steel (the 1.5 times above that its percentage elongation exceeds 45 steel) , make cutting force adds

3, cut bits and phenomenon of cutting tool felt serious

In cutting process generate the tumour that accumulate bits easily, affect treatment surface surface roughness already, cause cutting tool surface easily to flake again

4, cut bits not easy and curly with break off

Reach to closing close partly the cutting tool that holds bit, easy generation cuts bits to jam phenomenon, make machine exterior surface roughness to increase reach blade of cutting tool collapse

5, linear expansion coefficient is big

It is the half as much again of coefficient of carbon steel linear expansion about, below the action of cutting temperature, workpiece produces heat easily to be out of shape and affect dimension precision

6, coefficient of thermal conductivity is small

It is the 1/4~1/2 of coefficient of thermal conductivity of medium carbon steel about commonly, cutting temperature is high, cutting tool wears away fast

The choice of cutting tool material

1. should choose hardness tall, tenacity and hear resistance are good, and combine the cutting tool material with little sex in person with stainless steel chemistry

When 2. uses high-speed steel, appropriate chooses W2Mo9Cr4VCo8, w6Mo5Cr4V2Al, the high-powered high-speed steel such as W10Mo4Cr4V3Al

When 3. uses hard metal, unfavorable use YT kind alloy, had better use the YW that contains Ta(Nb) or YG tungsten cobalt kind (the M of ISO, K kind) alloy. Wait like YS2, YG3X, YG8W, YG6A, YG6X, YG643, YG813, YW3Y, YG8N

4. coating hard alloy can use CA15, CA25, YBM151, YBM251, YBM351, YBG202, YBG252, YBG302, CN251, YB425, ZC05, ZC07, ZM10 to wait

Cermet can use 5. YNG151; Coating cermet can use YNG151C

Because stainless steel and titanium alloy are not easy rusty, not easy attaint, the exterior is beautiful wait for a characteristic, make its are applied extensively in modern industry things. Although be mixed to common stainless steel the treatment of titanium alloy already very difficult, but the development as stainless steel, the treatment of stainless steel of sclerotic to separate out sex becomes more difficult, can appear accordingly a lot of for example: Broach is not quite sharp and the treatment sclerosis that cause, cut bits easy curly twine, cutting temperature heighten and the tool loss of life that cause, dissolve the problem such as the move. Accordingly how efficient, high accuracy ground machines ability stainless steel and titanium alloy material, it is the one big secret trouble that perplexing research and development to design staff all the time.

Fall in the indefatigable effort of personnel of OSG research and development nowadays now, alloy of titanium of stainless steel & is special broach WDO-SUS is born. Reproduce the broach of sharp sex as, WDO-SUS is right the common problem when stainless steel and titanium alloy treatment and treatment, can accomplish true be readily solved!

Stainless steel material machines temperature of muscularity of sclerotic and serious, cutting, cutting because of the surface tall, cut bits to break off not easily, cutting tool wears away coefficient of linear expansion of fast, workpiece is advanced treatment characteristic caused it but cutting processability is poorer, compare with phase of carbolic steel data, its machinability drops near 50% . Be aimed at these treatment characteristics of stainless steel, the cutting tool that processes stainless steel is choosing to go up not only the tenacity that should consider cutting tool data, before at the same time still choice cutting tool has bigger cutting / hind horn and sharp cutting point, at the same time the coating material of cutting cutting tool basically also chose coating of physical deposit law to obtain surface of slicker cutting tool cutting, in order to reduce cutting force.

The product of turning cutting tool of Kennametal-Stellram reachs cutting tool coating from material and cutting tool structure 3 respects proceed with, did special and thorough special design in the light of stainless steel material, become stainless steel material to get the person that run outstandingly. Kennametal-Stellram turning contains the chemical part of special wear-resisting in cutting tool base material, deployed those who differ to break bits chamfer structure according to machining property at the same time, no matter be rough machining or finish machining, the cutting tool that has tall wearability, tall tenacity shows its outstanding treatment performance, its product with efficient the reliance that is used a client broadly with longevity life.

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