158results about How to "Avoid heat cracks" patented technology

Disclosed is a welding material for a Ni-based alloy, which comprises the following components: C <= 0.05 mass%, 8 mass% <= Cr <= 25 mass%, Fe <= 4.0 mass%, W <= 15 mass%, 5 mass% <= Mo+1 / 2(W+Re) <= 20 mass%, Co <= 20 mass%, 0.01 mass% <= Al < 2.0 mass%, 0.01 mass% <= Ti < 2.0 mass%, Al+1 / 2Ti <= 3.0 mass%, Nb+1 / 2Ta <= 1.5 mass%, B <= 0.007 mass%, Zr <= 0.04 mass%, 0.01 mass% <= Si = 0.5 mass%, Mn <= 1.0 mass%, P <= 0.010 mass%, S <= 0.002 mass%, and 0 <= 0.005 mass%, with the remainder being Ni and unavoidable impurities.

The invention relates to the field of casting blank manufacturing, in particular to a method for improving the self-feeding capacity of a high and thick large-cross section casting blank, and can solve the problems that the center quality of the thick large-cross section casting blank is poor, cracks are generated on the surface of the thick large-cross section casting blank, and the rejection rate is high in the prior art. The method comprises the following steps of: controlling external cooling conditions of different solidification stages of the casting blank to quickly solidify the outer surface of the casting blank to form a shell, establish strength and prevent surface cracks from being generated; performing heat preservation and slow cooling on the surface of the casting blank to keep a large area of a core part in a pasty area, wherein a solidification layer on the outer surface of the casting blank is kept at a higher temperature so that plastic deformation is realized; and performing simultaneous solidification and solid-phase movement in the subsequent solidifying and shrinking process of the casting blank to fulfill the aim of radial self-feeding of a deformable metal at a high temperature so as to eliminate the internal shrinkage cavities and surface cracks of the casting blank and obviously improve the looseness until the internal looseness of the casting blank is eliminated. The method is applicable to the high and thick large-cross section casting blank, particularly to a thick large-cross section casting round blank and a thick large-cross section casting square blank of which the height-diameter ratio is high and the axial looseness cannot be improved through riser feeding.

A disk rotor assembly for a vehicle may include an adaptor adapted to be mounted on a hub and to receive torque of a wheel, a disk rotor generating a braking force, a transmitter engaging the adaptor with the disk rotor and adapted to transmit the torque received by the adaptor to the disk rotor or to transmit the braking force generated by the disk rotor to the adaptor, and engaging member for engaging the adaptor, the disk rotor, and the transmitter altogether.