Murata Boring Technology Research Co., Ltd.
Description of Business


 - HVOF Spraying(HVAF Spraying)

 - Plasma Spraying

 - Low-Pressure Spraying

 - Wire Spraying

 - Self-Fluxing Alloy Spraying

 - Rokide Spraying


Other Business Operations

 - Laser Carving

 - Ultrasonic & High Voltage Cleaning

 - Grinding and Cutting Operation

 - PTA Power Weld Overlay

 - Engine Recycling


TOP Page > Description of Business > Wire Spraying


What is Wire Spraying?

It uses various wire-shaped metals for spray material.
As the temperature of the base material to be sprayed is controlled at 150 degrees C or less, distortions caused by heat or degradation of base material do not occur.
Wire Spraying is also called Low Temperature Overlay Spraying and enables thick overlay.
Depending on the system, there are two types; Arc Spraying and Wire Flame Spraying.


An arc is generated between the ends of two wires and these wires are melted. The melted wire is turned into fine particles with compressed air and sprayed on the base material.


The wire is melted by the combusting gas at the front end of the gun. Then the melted wire is turned into fine particles with compressed air and so sprayed on the base material.

  Features of Wire Spraying  

Any base material is selectable.

As any heat effect can be given to the base material, any base material is selectable.
Depending on the base material or its shape, a film of 0.3 to 1 mm thickness can be created. Free combination is available, for example, stainless spraying on aluminum, bronze spraying on carbon steel, or molybdenum spraying on casting, so economical effect is created.

Any spray material is selectable.

Spraying of any wire material appropriate for a spray gun, is available.
Spray material such as stainless steel, carbon steel, bronze, molybdenum, aluminum, nickel, copper, etc., can be freely selected, depending on the purpose or application.

Enhanced Anti-seizure and Abrasion Resistance

The sprayed metal layers have microscopic pores which keep oil in them, so lubrication is greatly enhanced.
The sprayed metal particles are hardened in the air during spraying, and the hardness becomes higher than that of the particular metal in question, so that resistance to abrasion is enhanced.

Partial spraying is available.

Non-distorting processing is available, which does not present any heat effect on the base material, such as spraying to remedy mistaken cuts, or spraying to restore a worn section.


Spraying to restore the worn section on hydraulic cylinder’s sliding surfaces (Wire Flame Spraying) (Stainless Steel)


Spraying to restore the bearing section in the pump impeller for hydroelectric power plant (Wire Flame Spraying) (Stainless Steel)


Spraying restores the bearing section in the guide pane of hydroelectric power plants (Wire Flame Spraying) (Stainless Steel)

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