TH72094B - Copper alloy tubes for excellent anti-cracking heat exchanger. - Google Patents

Abstract

DC60 This invention provides a copper alloy tubing for a highly durable heat sink, the pressurization of freshly cooled media such as carbon dioxide. And fluorocarbon On the basis of -HFC And excellent crack resistance even if the pipe is thinned And alloy tubes Copper for heat sink It contains mixtures with specific quantities of Sn and P with an average crystal grain size of 30 (microns) or less and a high resistivity of 250 MPa or more of the resistivity. Expands in the longitudinal direction of the pipe improving crack resistance. Like the elements that correspond to the Goss compliant density distribution of 4% or less, this invention provides a copper alloy tube for a highly durable heat dissipation medium. New coolants such as carbon dioxide And fluorocarbon On the basis of -HFC And excellent rupture resistance of membranes, although if the tubes are thinned And alloy tubes Copper for heat sink Which contains mixtures with specific quantities of Sn and P with an average crystal grain size of 30 (formula) m or less and a high resistivity of 250 MPa or more of the resistivity. Expands in the longitudinal direction of the pipe improving crack resistance. Such as the elements which correspond to the density distribution in Goss conformity of 4% or less.

Claims (4)

Claims (total) which will not appear on the classifieds page :Edit 05/03/2019 Page 1 of 1 page Claims 1.1 to 3.0% by mass and P:0.005 to 0.1% by mass, where things The remaining elements are made of Cu and the necessary impurity. The average granular crystal size is 30 (formula)m or less, and the pipe's longitudinal expansion resistance is 250 MPa or more, and where the copper alloy tube contains: the structure of the orientation distribution density. In the Goss orientation is 4% or less ----------------------------------- ---------------------------------------------------- --------------- 1.1 to 3.0% by mass and P:0.005 to 0.1% by mass, where the residue contains Cu mixture and the necessary impurity. Mean small crystal size 30 (formula) m or less, and the tube longitudinal expansion resistance 250 MPa or more, and where the copper alloy tube contains: an element that conforms to the density distribution in Goss compliance at 4% or less 2. Copper alloy tubes for heat dissipation are good in rupture resistance according to claim 1, where the proportion of granularity with low angle of angles with a deviation of 5 to 15 ° in the composition of copper alloy pipes of 1% or more. 3. 1.01 to 1.0% by mass 4. Copper alloy tubes for heat dissipation excellent in resistance to rupture according to claims 1 to 3, in addition to containing: less than 0.07% by mass of the total volume of one or two or more types. of the element Choose from a group that includes Fe, Ni, Mn, Mg, Cr, Ti and Ag.