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High density zinc base alloy balance block and methods for manufacturing same

A technology of zinc-based alloy and balance block, applied in the direction of balancing rotating body, etc., can solve the problems of lack of formability and machinability, general low density, magnetic and spark discharge, etc., so as to reduce the production cost and achieve good cutting performance. , good formability

Active Publication Date: 2007-08-01
NINGBO POWERWAY ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the balance weight of zinc-based alloys in the prior art is mainly composed of three elements: zinc-copper-aluminum. Their common disadvantage is that the general density is low, generally below 7 grams / cubic centimeter, which is limited to a limited volume range. use; its formability and ease of processing are slightly lacking; and occasionally have harmful factors such as magnetism and spark discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh the following raw materials: 92 kg of Zn and 8 kg of Cu; put them in a melting furnace and smelt them by conventional induction heating; use conventional hard molds, namely steel mold casting, to make a master alloy with a diameter of 80 mm. Ingot; extruded at a temperature of 380°C, such as extruding into a blank of the balance weight material on a conventional 350-ton extruder; at a temperature of 400°C, a conventional hot punching method is used to prepare the finished balance weight.

[0019] Detected by conventional methods, the density of the alloy is 7.36 g / cm3; the tensile strength of the finished product is 330MPa, the elongation is 13%, and the hardness is HB=80.

Embodiment 2

[0021] Weigh the following raw materials: 68 kg of Zn, 20 kg of Cu, 10 kg of Sb, 2 kg of Mn, put them in the melting furnace, and use conventional induction heating methods to smelt; use conventional hard molds, ie, steel mold casting methods Into a master alloy ingot with a diameter of 80 mm; extrude at a temperature of 450 ℃, such as extruding into a billet of a balance weight material on a conventional 350 ton extruder; at a temperature of 400 ℃, adopt a conventional hot punching method Get the finished balance weight.

[0022] Detected by conventional methods, the density of the alloy is 7.5 g / cm3; the tensile strength of the finished product is 340MPa, the elongation is 13%, and the hardness is HB=85.

Embodiment 3

[0024] Weigh the following raw materials: 93.6 kg of Zn, 4 kg of Cu, 0.2 kg of Sn, 0.2 kg of Fe, and 2 kg of Mn, put them in the melting furnace, and use conventional induction heating to smelt; use conventional hard molds, that is, steel mold casting A master alloy ingot with a diameter of 80 mm is made by the method; extrusion at a temperature of 450 ℃, such as extruding into a billet of a balance weight material on a conventional 350 ton extruder; at a temperature of 400 ℃, the use of conventional heat The punching method makes the finished balance weight.

[0025] Detected by conventional methods, the density of the alloy is 7.28 g / cm3; the tensile strength of the finished product is 360MPa, the elongation is 12%, and the hardness is HB=90.

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Abstract

The invention discloses a high- density zinc-base alloy counterbalance, comprising following components with their weight proportion: Zn 60- 98%, Cu 4- 20%, M 0- 3%, Sb 0- 10%, and non-escapable foreign matter; and M is one or more from Sn, Bi, Mn and Fe. The preparaing method comprises: adding raw material according to component, smelting alloy with eddy-current heating; preparing alloy cast ingot with die-casting or semi continuous metal cast process; squeezing counterbalance stock at 200- 450 Deg. C; thermal shocking at 200- 450 Deg. C into counterbalance final product. The density of said high- density zinc-base alloy counterbalance is larger than 7.2 g / cm3, and the compactibility and deformability are quite good and there is no magnetic and spark discharge element.

Description

Technical field [0001] The invention relates to a balance weight and a preparation method thereof, in particular to a high-density zinc-based alloy balance weight and a preparation method thereof. Background technique [0002] Balance weight, also known as counterweight, is an important accessory for rotating objects such as motor rotors. It can improve stress distribution, reduce noise, and reduce vibration. It is an indispensable auxiliary part for many mechanical equipment. In actual production, depending on the shape, size and force state of the mechanical device, balance weights of different weights need to be selected. The density of the alloy is an important parameter of the balance weight material, which directly determines the volume and weight of the balance weight; in addition, the workability and mechanical properties are also important indicators for the practical application of the balance weight material, because most materials have to pass through It can be fixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/00C22C18/02F16F15/32B21C23/00B21J1/06
Inventor 谢识才孙文声沈明梁梅玲郭俊杨军
Owner NINGBO POWERWAY ALLOY MATERIAL
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