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Questions tagged [grinding]

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4 votes
3 answers
629 views

How to select the correct grinding wheel type for precision grinding of tool steels?

I am planning to move from conventional grinding wheels to super-abrasive grinding wheels. I am unable to decide the right type of super-abrasive wheel for my manufacturing operations (I am into knife ...
Sai Srinivas Desabathina's user avatar
3 votes
2 answers
1k views

Definition of the "specific material removal rate"?

I've run across a term in some grinding manufacturing research papers called the specific material removal rate. The units given for this term are [mm$^3$/mm$\cdot$s] (I don't really like this style ...
ConjuringFrictionForces's user avatar
3 votes
2 answers
2k views

How to prevent static buildup in an electric burr mill coffee grinder?

Every morning when I get up, I use this coffee grinder to grind beans for my morning coffee. When I remove and subsequently open the top of the bin, I often find that enough static electricity has ...
DLS3141's user avatar
  • 2,145
2 votes
1 answer
602 views

How to use sample holder on Metallography specimen preparation machine Struers Tegrapol-21

In lab we have Struers Tegrapol-21 grinding and polishing machine. I use it for sample preparation. Usually I put 6 samples at once and prepare them with sample holder. However today I need to prepare ...
Gokce Mehmet AY's user avatar
2 votes
1 answer
138 views

Can diamond grinding wheels be used to grind Tantung (non-ferrous High Cobalt, Chromium, Tungsten alloys?)

I've read that when using diamond wheels to grind ferrous metals, at high temperatures the carbon in the diamond becomes soluble in the iron thus damaging the diamond wheel. Is it okay to use a ...
DKNguyen's user avatar
  • 5,621
1 vote
1 answer
70 views

How are high accuracy grinding stones and disks made?

Generally speaking cutters such as end-mills and often lead screws are ground vs shaped using a sharp cutter. I am curious how are high accuracy grinding wheels made? Their very nature seems to be ...
FourierFlux's user avatar
1 vote
2 answers
1k views

Difference between an angle grinder and an abrasive saw

It seems to me that abrasive saw is a term mainly used in the US (the Wikipedia article on it has no links to pages in any other languages), whereas angle grinder has some 20+ translations. So, can ...
against very long user names's user avatar
1 vote
2 answers
2k views

How is sandpaper grit size (the FEPA number system) defined?

Sandpapers are labeled to show their coarseness according to different standards. The CAMI system is used in e.g. the USA, and the FEPA system in Europe. I am interested in the FEPA system. It labels ...
Steeven's user avatar
  • 163
1 vote
1 answer
244 views

Methods to grind a heat sensitive material into a fine powder?

I am conducting an experiment for work that involves grinding 10 kg (to start) of salt into a fine powder (around 40 µm particle size). The salt comes in granules up to 2 mm in diameter. There must be ...
Darek's user avatar
  • 13
1 vote
2 answers
1k views

What is an effective method of turning polyurethane foam into a powder?

I want to grind flexible polyurethane foam to a size of about 50-100 microns. The feedstock is shredded 1.5 lb/ft^3 polyurethane foam. I tried a commercial meat grinder, which works but is very slow, ...
Anniepoo's user avatar
  • 145
1 vote
0 answers
64 views

Measurement of grinding wheel waviness [closed]

I have done experiments on a grinding machine and have collected the data of grinding wheel profile (using a laser sensor). The raw data consists of info on grinding wheel profile, waviness and ...
user9949's user avatar
0 votes
0 answers
11 views

Grinding an inside radius on deckel SO

I'm trying to find out if it is possible to grind an accurate inside radius on a deckel SO. Does anyone know if this is possible? I tried googling it but wasn't able to find anything useful and then ...
David Carpenter's user avatar
0 votes
2 answers
34 views

Can I use household vacuum cleaner with AquaFilter as construction/industrial one

I'm going to buy Thomas vacuum cleaner with Aqua filter and use it to sand walls a bit with grinder. And after finishing the decoration, use it as an ordinary cleaner. May construction plaster, putty ...
Oleg Shavrov's user avatar
0 votes
0 answers
38 views

Can the fillet radius of an edge shaped by grinding be guessed from the grit size of sandpaper?

Assumptions Assume a small bore hole with a few mm diameter in a hard plastic plate (e.g. POM), and further assume that after drilling the hole the surface of the plate is grinded with a disk with ...
Georg W.'s user avatar
  • 101