Powder metallurgy balance block for engine crankshaft and production process of powder metallurgy balance block

• Main Authors: LI WEI, XING SHENGLI, HU PINGPING, HU AIHUI, ZHU MIN
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2021
• Subjects: ALLOYS; BLASTING; CASTING; CHEMISTRY; ENGINEERING ELEMENTS AND UNITS; FERROUS OR NON-FERROUS ALLOYS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PUNCHING METAL; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS; WORKING METALLIC POWDER; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention relates to the technical field of engine crankshafts, and discloses a powder metallurgy balance block for an engine crankshaft. The powder metallurgy balance block comprises a block body, wherein the block body comprises a balance hole formed in the outer surface of the block body and an external slot hole formed in one side of the block body; the block body is connected with an external engine crankshaft through the external slot hole; the external slot hole and the balance hole are formed in different vertical planes; and through later detection, the density of the block body is detected to be 6.7-7 g/cm , the tensile strength is detected to be greater than 410 MPa, and the hardness is detected to be greater than or equal to HRC 22 (=HRB 99.6), so that the density, the tensile strength and the hardness of the block body are relatively great, the service life of the block body is prolonged, the circumstance of blockage in a working process is prevented, and working efficiency is improved. The i