PURPOSE:To provide a rolling mill which smoothes the wear curve of a pair of work rolls and can improve the quality of a product, by making the work rolls movable symmetrically with each other in an axial direction, and forming single tapered parts, which are symmetrical with each other, in the end parts of the respective work rolls. CONSTITUTION:A pair of work rolls 11, 12 of a rolling mill are c...

A machine tool employs a workpiece guidance system comprising a pair of guide assemblies each including a first stop member movable along one of the X and Y axes and a clamping element a second stop member for clamping the workpiece against the first stop member for movement therewith. The second stop member element is movable independently of its associated first stop member as well as therewith,...

A method of preparing foundry sand by measuring moisture and compressibility includes the steps of determining a set of desired characteristics for compressibility and for moisture in accordance with a particular clay content, measuring the actual compressibility in a first stage early in the processing of the foundry sand, adding moisture in accordance with the difference between the moisture for...

1. A reactor for the continuous performance of polymerizations in highly viscous media, the reactor having at least a number of static mixing elements, characterized in that the reactor (1), consisting of at least one tube, comprises a pre-polymerizer (I, IV) followed by a plug flow reator (II, III) having an outlet (14) for the product, the static mixing elements (2) of both the prepolymerizer (I...

Vinyl chloride-propylene copolymer resin having improved porosity as shown by an increased irreversible plasticizer take-up is produced by the suspension polymerization of vinyl chloride and propylene in the presence of a binary suspension system of a hydroxypropylmethyl cellulose having 19-30% methoxyl and 4-12% hydroxypropoxyl substitution and a 30-50 mole % hydrolyzed polyvinyl alcohol.

PURPOSE:To obtain a lowly hygroscopic methacrylate resin sheet, by copolymerizing methyl methacrylate with cyclohexyl methacrylate and, if necessary, other copolymerizable monomer in a mold in the presence of a radical polymerization initiator. CONSTITUTION:50-85wt% methyl methacrylate is mixed with 50-15wt% cyclohexyl methacrylate and 0-30wt% other monomers copolymerizable with the above componen...

A method for recovering granular poly(arylene sulfide) from a polymerization reaction mixture at a temperature above that at which poly(arylene sulfide) is in molten phase comprising polar organic solvent and poly(arylene sulfide) in which, in the presence of a sufficient amount of separation agent to cause a phase separation of molten poly(arylene sulfide) and polar organic solvent, the temperatu...