Manufacturing method of special welding material for electron beam welding of YGH-60 hard alloy and 45 steel

A YGH-60, electron beam welding technology, applied in electron beam welding equipment, welding/cutting medium/material, welding medium, etc., can solve the problems of easy cracking and complicated process in fusion welding connection method, and avoid joint performance. The effect of reducing, relieving welding stress, and inhibiting the formation of brittle phase

Inactive Publication Date: 2013-03-13
ZHUZHOU HARD ALLOY GRP CO LTD +1
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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing hard alloy and steel are connected by brazing with complex procedures and the welding connection method is prone to crack defects, and provides electron beam welding YGH-60 hard alloy and 45 steel special welding How the material is made

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  • Manufacturing method of special welding material for electron beam welding of YGH-60 hard alloy and 45 steel

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specific Embodiment approach 1

[0019] Specific embodiment one: the electron beam welding YGH-60 cemented carbide of the present embodiment and the manufacture method of 45 steel special-purpose welding materials are specifically carried out according to the following steps:

[0020] 1. Weigh 8.3-8.5% of iron powder, 0.45%-0.55% of niobium powder, 0.75%-0.85% of yttrium powder, 0.45%-0.55% of carbon powder and the rest of nickel powder by weight percentage and add them to Mix in a powder mixer for 0.5 to 1 hour to obtain a mixed powder;

[0021] 2. Add the mixed powder obtained in step 1 into the mold, then put the mold into a hydraulic press, and press it for 120-150 seconds under the condition of a pressure of 300-1000T to obtain a compact;

[0022] 3. Put the compact obtained in step 2 into a vacuum furnace, raise the temperature to 1150-1200°C at a rate of 10-12°C / min and keep it for 1.5-2 hours, and then cool with the furnace to obtain electron beam welded YGH-60 hard Special welding consumables for qu...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the mass content of nickel in the nickel powder in step one is ≥ 99.5%, and the mass content of sulfur in the nickel powder is ≤ 0.003%; other and specific embodiments One is the same.

[0025] In the present embodiment, the mass content of sulfur in the nickel powder is limited, if excessive sulfur is contained in the nickel powder, it will increase the tendency of hot cracks in the welding process of YGH-60 hard alloy and 45 steel on the one hand; on the other hand On the one hand, even if a welded joint without cracks is obtained, the plasticity and toughness of the obtained joint will be greatly affected.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment differs from Embodiment 1 in that the particle size of the nickel powder in step 1 is 2-3 μm; other aspects are the same as Embodiment 1.

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Abstract

The invention discloses a manufacturing method of a special welding material for electron beam welding of YGH-60 hard alloy and 45 steel, and relates to an electron beam welding method of dissimilar materials. The manufacturing method solves the technical problems that the available brazed connection method for the hard alloy and the steel has complicated procedures and a fusion welding connection method causes cracks easily. The manufacturing method comprises the steps that 8.3-8.5% of iron powder, 0.45%-0.55% of niobium powder, 0.75%-0.85% of yttrium powder, 0.45%-0.55% of carbon powder and the balance of nickel powder are weighed according to weight percentages, and added into a powder mixing machine to be mixed, and obtained mixed powder is pressed and then put into a vacuum furnace for sintering, therefore, the special welding material for the electron beam welding of the YGH-60 hard alloy and the 45 steel is obtained. The special welding material can be used to weld the dissimilar materials.

Description

technical field [0001] The invention relates to a preparation method of a material for electron beam welding of dissimilar materials, and belongs to the field of fusion welding of dissimilar materials. Background technique [0002] Cemented carbide is a kind of cermet tool material prepared by powder metallurgy method with refractory metal compound (WC, TiC, TaC, etc.) as matrix and transition metal as binder phase. It has excellent properties such as high strength, high hardness, high elastic modulus, wear resistance, corrosion resistance, stable chemical properties and good red hardness, and is widely used in mechanical processing, geological exploration, mining and other fields. However, cemented carbide is expensive and has poor toughness, making it difficult to produce products with large sizes and complex shapes. The cost of steel is low, the toughness is good, and it is suitable for machining. Therefore, the combination of cemented carbide and steel has important the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B23K35/30B23K15/00
Inventor 陈国庆张秉刚涂建刚冯吉才吴振中
Owner ZHUZHOU HARD ALLOY GRP CO LTD
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