Surface smoothness achievable by grinding/machining.
Surface smoothness achievable by grinding/machining.
(OP)
What is the maximum surface smoothness that can be achieved by simple grinding? Can a finish of 12.5 microns be achieved by grinding with a grinding wheel or is it necessary to use a lathe machine? How does one measure the surface smoothness? Are there any instruments which can give surface roughness readings?
Virtually an assault of questions! Can someone direct me to codal provisons. An (overzealous) inspector is raising these uncomfortable questions and I have to prepare a reply.
This is an SOS call.
Regards
V.V.Vipin
Virtually an assault of questions! Can someone direct me to codal provisons. An (overzealous) inspector is raising these uncomfortable questions and I have to prepare a reply.
This is an SOS call.
Regards
V.V.Vipin





RE: Surface smoothness achievable by grinding/machining.
RE: Surface smoothness achievable by grinding/machining.
The profiler is a computerized, highly sensitive surface profiler that measures roughmess, waviness, step height, and other surface characteristics in a variety of applications. It features the ability to measure micro-roughness with up to 0.5 Å (0.002 µin.) resolution over short distances as well as waviness over a full, 60 mm (2 inch) maximum scan length.
RE: Surface smoothness achievable by grinding/machining.
Measurement of smoothness should be regarding for small area. So if the vvvipin's inspector wants only smoothness, hand grinder can do with very fine wheel or wheel with rug. But streghitness, roundness, size etc would be not accurate. If these measurements are also important, the third type of grinding machine would be necessary. Depending on the shape of the object and accuracy required, lathe of other machins, i.e. milling machine, could be used.
kyong
RE: Surface smoothness achievable by grinding/machining.
RE: Surface smoothness achievable by grinding/machining.
12.5 micron of what meterial? carbon steel, tools steel or high speed steel? heat treatment to what hardness? Hrc 58? or no heat treatment?
softness --> carbon steel < tools steel < high speed steel
if your work pieces are round then lath machine can do this kinds of finishing surface for carbon steel in the proper rpm and feed rate. you have to choose the right tools to cut it, normaly we use carbide insert for hard steel, but carbon steel you can use normal tools
How does one measure the surface smoothness? Are there any instruments which can give surface roughness readings?
find some template that demo the surface finish by compare this sample to you work pieces then you can get the rough feeling of what finishing you have get .
Virtually an assault of questions! Can someone direct me to codal provisons. An (overzealous) inspector is raising these uncomfortable questions
You have to look for the books cover Machine Shop practice to get all this info. this is experinece from people. Do not propose the expensive solution to these question.
and I have to prepare a reply.
This is an SOS call.
Hope you have your answer.
RE: Surface smoothness achievable by grinding/machining.
12.5 micron of what meterial? carbon steel, tools steel or high speed steel? heat treatment to what hardness? Hrc 58? or no heat treatment?
hardness --> carbon steel < tools steel < high speed steel
if your work pieces are round then lath machine can do this kinds of finishing surface for carbon steel in the proper rpm and feed rate. you have to choose the right tools to cut it, normaly we use carbide insert for hard steel, but carbon steel you can use normal tools
How does one measure the surface smoothness? Are there any instruments which can give surface roughness readings?
find some template that demo the surface finish by compare this sample to you work pieces then you can get the rough feeling of what finishing you have get .
Virtually an assault of questions! Can someone direct me to codal provisons. An (overzealous) inspector is raising these uncomfortable questions
You have to look for the books cover Machine Shop practice to get all this info. this is experinece from people. Do not propose the expensive solution to these question.
and I have to prepare a reply.
This is an SOS call.
Hope you have your answer.
RE: Surface smoothness achievable by grinding/machining.
Thanks for all the suggestions and tips. The response is really overwhelming.
Regards
V.V.Vipin
RE: Surface smoothness achievable by grinding/machining.
RE: Surface smoothness achievable by grinding/machining.
RE: Surface smoothness achievable by grinding/machining.
RE: Surface smoothness achievable by grinding/machining.