There are four main production technologies of preparing tungsten copper: mixed-press sintering method, activation sintering method, infiltration method, and nano/ultrafine mixed powder sintering method.

1.Brief introduction

Barium tungstate is white powder, has micro toxicity. Relative density is 5.04. It can slightly dissolve in water, completely dissolved in oxalate water solution, decompose in acid and is stable in the air.

1.Brief introduction

Block infrared rays at 950nm (up to 95% at 1400nm), mainly used for various plastic and glass films.

There are four preparation methods of tungsten alloy balls, namely, compression molding, disc pelletizing, squeeze-cut rotation method and injection molding.

The low-temperature ductility of the tungsten wire is the main factor affecting the winding performance. The main influencing factors are the purity of raw materials, additives and the surface condition of the wire.

Impurity elements in tungsten alloys include H, O, C, N, P, S, and Si. Because these elements have small atomic radii, and strong diffusivity in alloys, they are more likely to be in the grain boundaries and phases.

The tip angle of the tungsten electrodes should be made according to the current selection.

The testing procedures of sagging value of tungsten wire includes shaping and testing results calculation.

The testing of sagging value of tungsten wire requires the preparation of samples and testing equipments.

What Are Bucking Bars?

Bucking bars are solid metal pieces made in different shapes and sizes. They are made from tungsten alloy and steel materials. But tungsten materials are more popular due to its characteristic of high density that enables tungsten bucking bars have small volume while meeting the weight requirement. 

What Are Bucking Bars Used for?

Bucking bars are used in aircraft, truck, bus, boat and trailer manufacturing processes for riveting, primarily aluminum and steel sheet metal components together.

How to Use Bucking Bars?

1.Place the smooth end surface of the bar on the end of the rivet; 

2. When in place, a riveting gun is used to apply pressure through multiple hits on the head of the rivet, while the bucking bar is forced against the rivet bucktail portion; 

3. Setting the rivet in place, filling the drilled hole it was placed in and securing the fastener in place and making the components rigidly connected.