Strength of Brazed Joint and Joint Thickness for Cemented Carbide / Silver Brazing Filler Metal

Kyogo Watabe,Richard Chukwuma Meribe,Yuki Fujishita,Kazuya Mori,Kazufumi Sakata,Koji Kirihara

doi:10.12792/iciae2015.087

Abstract

One of the most common methods for joining materials in manufacturing is the process of brazing. Brazing is widely used in many areas such as space engineering, marine engineering and electrical engineering, just to name a few. Brazing is a commonly used engineering solution due to its versatility and low cost. Brazing is used in making Poly-Crystalline Diamond (PCD) tools. While these tools are highly durable and have a long operating life the brazing can negatively affect these qualities with variations in strength especially with tools that are small. In this paper the causes of these variations in joint strength of a small area have been investigated using the four point bending and the cantilever beam bending tests. The parent material used was cemented carbide and the brazing filler metal was silver based. Three types of brazing were used; flame brazing, induction brazing and furnace brazing. The results revealed that the brazing joint thickness affected the strength. The optimal thickness for maximum strength has been identified.

Highlights

In this paper the causes of these variations in joint strength of a small area have been investigated using the four point bending and the cantilever beam bending tests
Brazing is one of the most common methods for joining materials in manufacturing. It is widely used in many areas such as space engineering, marine engineering and electrical engineering
The bending strengths of the specimens made by the three methods are shown in Table 3 and Fig. 4

Summary

Introduction

In this paper the causes of these variations in joint strength of a small area have been investigated using the four point bending and the cantilever beam bending tests. 1. Introduction creating a consistently strong bond without the problems of temperature difference which welding has. Introduction creating a consistently strong bond without the problems of temperature difference which welding has It is a good method in bonding materials of varying thicknesses as well as being able to bond a wide variety of materials at a reasonable cost. In manufacturing there is a demand for increasingly smaller and smaller punches with smaller tools the inconsistency of brazing strength has become a problem(1). Brazing is one of the most common methods for joining materials in manufacturing. It is widely used in many areas such as space engineering, marine engineering and electrical engineering. One of its appeals is the uniformity of the process in which the connection of materials is completed simultaneously

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Discussion

Conclusion