Abrasion resistance, description

Abrasion resistance, description, 43 Acceleration phenomenon on solidification of CaCl2 6H2O with nucleation agent contribution of nudeation mechanisms, 402,403-404, 405... 

Generic name and description Breaking tenacity, g/denier Abrasion resistance Resistance to acids Resistance to alkalies Resistance to oxidizing agents Resistance to solvents Specific gravity Maximum operating temperature, "FI... 

Results of the Vickers hardness of 15 inorganic and organic salts will be presented. The hardness-force dependency, and the effects of direction dependency were examined. The measured values of the Vickers hardnesses were taken for an attempt to prove a model to calculate the hardness. This model describes the hardness purely by physical properties of the substances. The use of such a model may be an approach for the description of the abrasion resistance of salts. Data describing the abrasion resistance could help in the understanding and interpretation of secondary nucleation phenomena. 

The comparison of the measured and calculated Vickers hardnesses is of acceptable quality. With this physical model of the hardness it should also be possible to compute the Vickers hardnesses of salts with a more complicated lattice structure than the NaCl-structure. This may be an approach for a description of the abrasion resistance of salts. Such a description of the abrasion resistance could be useful in calculating the secondary nucleation rates. 

Boron Carbide, B4C coml prod called, tNor-bide, mp ca 2375°, d 2.52 is prepd by heating anhyd boric oxide B30, with carbon in graphite resistance furnace at ca 2500°. Its special interest is due to its remade able hardness jwhich lies on the Moh s scale betw thatjof silicon carbide and diamond. Used as an abrasive. Detailed description of this compd is given in Kirk Othmer 2(1948), 830-4(21 refs)... 

General Description Honeywell Plasties Capron offers materials combining the benefits of both nylon 6 and nylon 66. Capron 6/66 possesses the combination of strength and toughness associated with nylon 6/66 as well as excellent heat, chemical, and abrasion resistance.f ]... 

Description Gypsum-impregnated fabric coverings, used with adhesive that crystallizes plaster for a permanent bond to the wall. Very strong, high tensile strength, impact and abrasion resistant. Can t be pulled loose. Attractive product line. May be used to permanently cover deteriorated surfaces, or as surface preparation for more lead-specific encapsulant. 

Certain other fiber properties increase its value and desirability in its intended end-use but are not necessary properties essential to make a fiber. Such secondary properties include moisture absorption characteristics, fiber resiliency, abrasion resistance, density, luster, chemical resistance, thermal characteristics, and flammability. A more detailed description of both primary and secondary properties follows. 

In this section experimental variables appropriate to a description of densification are identified on the basis of logical inferences from experimental findings. Table I summarizes the densification data obtained by Pearson et al.Q) in their study of sintering behavior and abrasion resistance in grinding balls produced from alumina subjected to various amounts of pregrinding (dry ball milling). The tabulation also includes pertinent data on the surface area of the ground particulates ( ). 

Figure 2 Collection of test pieces made of unshaped refractories. Description from left to right (Top) Two bricks for measuring thermal conductivity (230 x 114 x 76 mm) Shape A according to EN cup for slag tests (100 x 100 x 100 mm, hole 50 mm in diameter and depth). (Middle) Test piece for measuring abrasion resistance according to ASTM C 704 (114 x 114 x 40 mm) test piece according to special specifications for petrochemical industry (230 x 50 x 50 mm) drilled 50 mm cylinders out of a shape B (one with 12.5 mm hole for determination of Refractoriness Under Load or Creep Under Compression). (Bottom) Shape B according to EN 3 cubes for petrochemical specifications (50 x 50 x 50 mm) Shape C according to EN.

Stainless steel wire brushing or light grinding with clean aluminum oxide abrasive disks or flapper wheels are helpful. Grinding or polishing with grinding wheels or continuous belt sanders tend to overheat the surface layers to the point where resistance cannot be fully restored even with subsequent pickling. Brief descriptions of hot- rolled, cold-rolled, and mechanical finishes are presented in Table 8.34. 

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