公开(公告)号：EP3002076A1

公开(公告)日：2016-04-06

申请号：EP14460126.7

申请日：2014-12-19

Applicant: "NewTech" Sp. z o.o.

Inventor： Gubarev, Aleksandr ,  Chabior, Roman ,  Slapek, Stanislaw ,  Iudakov, Vladmir

IPC: B23K20/02 ,  B23K20/16 ,  B23K20/227 ,  B23K20/24 ,  B23K20/26 ,  B23K103/04 ,  B23K103/18

CPC classification number: B23K20/023 ,  B23K20/16 ,  B23K20/227 ,  B23K20/24 ,  B23K2203/04 ,  B23K2203/05 ,  B23K2203/18 ,  B23K2203/24

Abstract: A method of diffusion welding in air of different metals by clamping and heating at the same time is described , wherein the metals are welded in an atmosphere of open air, wherein in the first stage the iinitial mechanical processing is mades carried out in the first stage is preferably a preliminary mechanical processing of end faces of metal blanks, consisting in dry grinding, preferably in an approximately sixth class of roughness, in the second stage the front surfaces of metal blanks are covered with preferably liquid hydrocarbons and/or in the form of pastes or gels, which are disintegrated during the welding process without solid residues, wherein the oxides do not occur before welding on the surface of blanks, the gas phases which form during heating, protect the area of welding against the access of free air and hence against oxidation, and then they are joined by centering faces preferably by clamp and the contact areas are heated by currents of high frequency using the loop inductor untill reaching the welding temperature (Tz) preferably a temperature dependent on the type of welded metals, and then the heating is switched off preferably for 2-3 seconds, and next the additonal impulse of heating is switched on to the welding temperature (Tz): In the range of from 0.75 to 0.95 of the melting point of the metal, when the number of impulses of heating depend on the diameter of welded parts, at least one, wherein the pressing force of metal blanks is not increased during the welding process.

Abstract translation: 描述了通过同时夹紧和加热在不同金属的空气中扩散焊接的方法，其中金属在露天的气氛中焊接，其中在第一阶段中，初次机械加工在第一阶段进行 优选地是金属坯料的端面的初步机械加工，其包括在干式研磨中，优选地在大约六级的粗糙度中，在第二阶段中，金属坯料的前表面被优选液体烃和/或以 糊状物或凝胶，其在焊接过程中在没有固体残余物的情况下分解，其中在焊接在坯料表面之前不发生氧化物，在加热期间形成的气相保护焊接区域抵抗自由空气的进入，因此 抵抗氧化，然后它们通过定心面接合，优选通过夹紧，并且接触区域使用环路被高频电流加热 电感器直到达到焊接温度（Tz），优选取决于焊接金属的类型的温度，然后将加热切断优选2-3秒，接下来加热的附加脉冲被切换到焊接温度（Tz ）：在金属的熔点的0.75〜0.95的范围内，当加热的脉冲数取决于焊接部的直径时，至少一个，在焊接期间金属坯料的压力没有增加 处理。