Easily-welded brass and preparation method thereof

• Main Authors: HUA CHENGWEN, ZHANG YI, XIANG YANLONG, YE DONGHUANG, QU FUSHUI, ZHANG BAO
• Format: Patent
• Language: Chinese; English
• Published: 18.11.2022
• Subjects: ALLOYS; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses brass easy to weld. The brass is characterized by comprising, by mass, 60%-63% of Cu, 0.1%-0.5% of Pb, smaller than or equal to 0.05% of Al, smaller than or equal to 0.008% of Bi, 0.02%-0.10% of Si, 0.008%-0.06% of Zr and the balance Zn and inevitable impurities. According to the brass, the content of the main element Cu of the brass is limited, the content of impurity elements Al and Bi influencing the welding performance of materials is limited, meanwhile, beneficial elements Si and Zr improving the welding performance of the brass are added, matrix phases of the alpha phase and the beta phase are achieved, and the area proportion of the beta phase is controlled. The tensile strength of the welding part reaches 90% or above of the tensile strength of the material, and the welding part has good welding performance and has good air tightness when being used as a component with extremely high air tightness requirement. 本发明公开了一种易焊接黄铜，其特征在于：该黄铜的质量百分比组成为Cu：60～63wt％，Pb：0.1～0.5wt％，Al≤0.05wt％