Carborundum powder

The method gives a very coarse finish but enables a large piece of glass to be ground down quickly. The work must be finished with carborundum powder by hand or using a lapping wheel. 

The stopper can now be ground in the socket with carborundum powder as before, until a good fit without any wobble is obtained. The position for the hole is now marked on opposite sides and the hole itself drilled halfway through from each side until they meet in the centre (7). The drilling is most conveniently done in a vertical drill, where the very gentle pressure with which the drill should bear on the glass is fully under... 

A simple method fulfilling the requirements seems to be the rotation of the Pt wire electrode in a suspension of carborundum powder [64]. It is cleaned continuously by the bombardment of solid particles. [For other methods see 63.]... 

Cell-free extracts of chick livers, prepared by first homogenizing the fresh livers with cold saline and coarse carborundum powder in a Waring blendor and then centrifuging at high speed, had a similar nonspecific Bi2-binding property (Ford, Gregory, and Holdsworth, 1955). The question arises as to the possible identity of these different binding factors. Certainly there are impressive similarities between the Intrinsic Factor and the sows milk factor. 

Under the term spots may be understood small, hard particles of material, such as sand, powdered glass, carborundum, etc, incorporated in an explosive either on purpose or present as impurities. Such particles are known as grit. The term spots may also be applied to small bubbles of air or other gases entrapped in cast explosives or incorporated on purpose in other expls, such as by rolling cartridges of gelatinous Dynamites. The reason why these spots are called hot spots is explained below... 

Silicon combines with carbon to form silicon carbide or carborundum, SiC, and forms are known that have the wurtzite and zinc blende structures. It is a very hard, tough material that is used as an abrasive and a refractory. The powdered material is crushed after mixing with clay and heated in molds to make grinding wheels. It is prepared by the reaction... 

Carborundum, when in the form of a fine powder, is readily decomposed by fusion with potassium carbonate in a platinum crucible. Upon removing the cover of the crucible the blue flame of burning carbon monoxide may be seen. 

Sand, aluminum, graphite, copper catalyst Aerocat, coke, iron powder Carborundum, iron oxide, coke, lead fly ash, alloy Glass beads... 

Carborundum sand, aluminum powder, lead powder, glass beads... 

Calcium Carbonate, Calcium Silicate, Powdered Aluminium, Copper Alumina, Flint Powder, Carborundum, Silica, Molybdenum Disulphide Chopped Glass Mica, Silica, Powdered or flaked Glass Metallic Filler or Alumina Colloidal Silica, Bentonite Clay Improved Thermal Conductivity Improved Machinability Improved Abrasion Resistance Improved Impact Strength Improved Electrical Conductivity Improved Thixotropic Response... 

D.J. I ley, B.H. Khoshaim, J. Colloid Interface Set 59 (1977) 243 carbon steel, test of droplet contour profile analysis (a) SD, surface finish 180 grade of carborundum grinding powder (b) TP, surface finish ibid, (a) (c) SD, surface finish 600 grade of carborundum grinding powder (d) TP, surface finish ibid. (c). 

Silicon carbide carborundum) has several polymorphs the 3-form adopts the wurtzite structure Figure 5.20). It is extremely hard, resists wear, withstands very high temperatures, has a high thermal conductivity and a low coefficient of thermal expansion, and has long been used as a refractory material and abrasive powder. Recent development of suitable CVD... 

Additive type Calcium carbonate calcium silicate powdered aluminum or copper Alumina flint powder carborundum silica molybdenum disulphide Chopped glass Mica silica powdered or flaked glass Metallic fillers or alumina Colloidal silica Bentonite clay... 

Hafnium powder as well as foil of 0.0022-in. thickness has recently been offered for sale but at high cost, the foil being priced at 4.00 per square inch Newsletter of Carborundum Metals Climax, Inc. of June 1966). 

Saint-Gobain Advanced Ceramics (formeily Carborundum Co.) Combat BN powder grades ... 

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