Method for preparing environmentally-friendly copper-base compound surface skirting line
A copper-based composite and manufacturing method technology, applied in the direction of manufacturing tools, welding media, welding/cutting media/materials, etc., can solve the problem that alloy materials contain impurities, cannot be used as high-grade surface traces, and the chemical composition of flux cannot pass the EU. Environmental protection testing and other issues, to achieve the effects of excellent processing performance, excellent toughness and permeability, and high welding strength
Inactive Publication Date: 2013-04-24
HANGZHOU PULI PRECISION EQUIP
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Problems solved by technology
At present, my country's high-end surfaces are mainly exported to the EU, which are strictly controlled by EU environmental protection laws (WEEE, RoHS). Failed to pass EU environmental testing
Method used
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[0017] The present invention is further described by examples below.
[0018] The manufacture method of environment-friendly type copper-based composite surface base line among the present invention comprises following several steps:
[0019] (1) Insert the wire-like solder into the copper tube whose inner diameter is slightly larger than its diameter, and compact it to eliminate the gap through the tube, so that the solder fills the inside of the copper tube and is tightly combined with the inner surface of the copper tube to obtain a cylindrical copper tube. base composite material;
[0020] (2) The copper-based composite material is stretched and annealed by a drawing forming process to make a wire-like base material with a diameter that meets the requirements; the base material is cut off according to the required length, and the outer copper of one end is The tube is thinned so that the diameter dimension of this end matches the inside diameter of the pilot hole to obtai...
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Abstract
The invention relates to the field of material preparation and aims to provide a method for preparing an environmentally-friendly copper-base compound surface skirting line. The method comprises the following steps: (1) inserting a brazing wire into a copper tube and compacting so as to acquire a columnar copper base compound material, wherein the inner diameter of the copper tube is slightly more than the diameter of the brazing wire; (2) drawing and annealing the copper base compound material by using a drawing forming process, thereby preparing a filamentous skirting line raw material witha qualified diameter size; cutting the skirting line raw material according to a required length; and skiving an outside copper tube at one end part till the diameter size of the end part is matched with the inner diameter of a positioning hole, thereby acquiring an end product. The novel surface skirting line prepared by using the method provided by the invention has excellent processing property and is suitable for a high-precision lossless soldering process. When the surface skirting line quickly passes through a calcining furnace, the silver solder is quickly melted so as to firmly weld the skirting line with the surface. The surface skirting line has the advantages of excellent toughness, permeability, and high welding strength. The surface skirting line can meet the demand of the existing industry on the high-performance environmentally-friendly surface skirting line.
Description
technical field [0001] The invention relates to the field of material preparation, in particular to a method for manufacturing an environment-friendly copper-based composite surface base line. Background technique [0002] The modern watch industry is an advanced manufacturing industry combining high-precision machinery and information technology. The unique precision manufacturing technology of the watch industry is a symbolic industrial technology that reflects a country's manufacturing level and modern industrial civilization, and is an indispensable high-tech in the national economy. technology industry. In watch manufacturing, the watch surface foot line (also known as surface foot, surface foot) mainly acts as a link between the surface and the movement, and is one of the key components of the watch. [0003] At present, the domestic ordinary feet are mainly made of copper, brass and other copper materials, with a high melting point range, and are generally fixed on t...
Claims
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IPC IPC(8): B23K35/18B23K35/22
Inventor 徐意王新国程笛
Owner HANGZHOU PULI PRECISION EQUIP