Metallographic preparation of tri-metal welded joints

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Truer can test and verify different sample preparation solutions for customers for different materials in a short period of time, ensuring that customers can quickly obtain ideal sample preparation results with repeatability.

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Material background

A welded joint refers to a joint where two or more parts are welded together. Or it refers to a joint where two or more parts are connected by welding, including weld, fusion zone and heat-affected zone. A fusion welded joint is formed by local heating from a high-temperature heat source. A welded joint consists of weld metal, fusion zone, heat-affected zone and parent metal.

This time, a three-metal welded joint of "duplex steel-pure copper-aluminum alloy" was prepared.

Graphs and Analysis

Copper substrate 100X Copper Steel Junction 200X

Aluminum substrate 500X Aluminum-copper junction 100X

*The above pictures may not be reproduced without permission, otherwise legal liability will be pursued.

Solution

Mounting：

MC006Flash Solid High Transparency Universal Cold Mounting Kit MC006 Cold Mounting Sample

Grinding & Polishing

Smoothneer-6 Metallographic Automatic Grinding and Polishing Machine PCX Porous Neoprene Polishing Cloth

The step of grinding & polishing		coarse Grnding	coarse Grnding	Fine Grinding	Medium Polishing	Diamond Fine Polishing	Diamond Fine Polishing	Diamond Fine Polishing
1	Surface	SiC sandpaper	SiC sandpaper	SiC sandpaper	SiC sandpaper	GD-PCY Wool fabric	GD-PCV shortvelvet(fannel)	GD-PCX Porous mubber
2	Abrasive Granularity	400#	800#	1200#	4000#	3μm	1μm	0.04um
3	Polishing/ Lubricant	-	-	-	-	DS001 High performance polycrystalline diamond suspension	DS001 High performance polycrystalline diamond suspension	SiS001-JP Silicon dioxide polishing liquid
4	Pressure	30N	30N	30N	25N	25N	20N	15N
5	Rotation Speed	300	300	300	300	150	150	150
6	Time/s.	70	120	120	120	180	120	240

The above recommended parameters are taken from: Smoothneer-6 Metallographic Automatic Grinding and Polishing Machine Aluminum Sample Preparation Method.

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Customized service is provided for your material and demands

Truer has experience engineers in technology service and experts who has abundant sample preparation skills and can provide the customized service to you.We will provide the professional preparation skill and operating proposals also can install and debug on-site.Warranty is one year for the equipment and lifetime maintenance.The technical support online and skills training can be provided annual.

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400-099-7576
021-34386739
021-34320902
13472638080 Clara Xu
Third Floor,NO.299,Songqiu Road,Qingpu District,Shanghai,China

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