2results about How to "Fast cooling rate" patented technology

The invention belongs to the technical field of high-entropy alloys, and particularly relates to a high-toughness CoCrNiAl series eutectic high-entropy alloy additive manufacturing method. Aiming at the condition that traditional additive manufacturing metal materials are insufficient in strength and toughness, the invention provides the principle that in-situ refining of an additive manufacturing structure is realized through a fine and uniform B2 phase capable of being sheared by utilizing the characteristic of rapid solidification of additive manufacturing, so that the strength and toughness are comprehensively improved. Based on the principle, the general formula of the eutectic high-entropy alloy is CoaCrbNicAld, a is larger than or equal to 29 and smaller than or equal to 35, b is larger than or equal to 18 and smaller than or equal to 23, c is larger than or equal to 27 and smaller than or equal to 35, d is larger than or equal to 13 and smaller than or equal to 19, and a + b + c + d = 100. The eutectic high-entropy alloy prepared through the laser powder bed melting technology achieves high strength, high ductility and high fracture toughness under the condition that subsequent heat treatment is not needed. The design principle of the invention can also be popularized to other eutectic high-entropy alloy systems.

The utility model discloses a kind of wire rod coiling cooling devices, its structure includes water storage tank, side edge box and winding roller, by pressing roller to press wire rod to the inside of water storage tank, make its water storage tank inside water to wire rod carry out soaking cooling work, can make wire rod completely immerse in water, so that soaking cooling effect is better, cooling is more comprehensive, so that cooling efficiency is faster, and can avoid air cooling efficiency is low, the situation that water spray cooling is not complete, and in the second motor drives the cleaning brush roller to the wire rod and is cleaned, can be cleaned on the impurity of wire rod, avoid wire rod impurity after coiling affect storage quality, and when winding, so that wire rod passes through the adsorption cotton outside adsorption roller can absorb its water stain, avoid the water stain on wire rod surface influence storage effect, so that storage quality is better.