Road Milling Tools

Variable current & voltage cold metal welding technology and equipment is a new technology about cold arc welding, and greatly improving the traditional melting polar gas shielded arc welding technology.This technology is mainly adopted advanced electronic technology to actively control welding current waveform and voltage, to achieve the heat inputting controlling with the cooperation of droplet short transfer. Variable current & voltage cold metal welding technology can reduce significantly welding heat input and cladding layers dilution rate, and provide the quality of the cladding layers.
Our company research and develop the technology of variable current & voltage cold metal stainless steel or copper alloy independently using for the inner wall of oil cylinder, and produce a series of variable current & voltage cold metal welding equipment using for the inner wall .
Equipment composition
Pulse welding power supply, high precision servo motor and cnc system.

The mechanical oscillation, special water-cooling welding gun, water circulating cooling system, welding video tracking syst
1.Strengthening and repairing the inner wall of outside cylinder and middle cylinder of the hydraulic support column.
2.Strengthening and repairing the inner wall of roadheader retracting cylinder, petroleum pipeline and the cylinder, pipe, etc.

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Rotary drilling tools
Rotary drilling tools is cladding wear-resistant alloy powder, usingmicro-arc plasma precision cladding, accurate powder feeding, vaporized isogranular alloy ceramic powder, andigjr-2b numerical control plasma pick cladding machine tool to produce a new type of cladding rotary drilling tools.
Application: mainly suitable for all kinds of foundation construction: highway construction and maintenance, tunnel construction, subway construction, mining, bridge construction, water conservancy and civil engineering and other industries.
Our rotary drilling tools can be customized according to customer requirement.

Cnc plasma wear resistant cladding equipment
Introduction
To resolve the wear issues of scraper conveyor, we have made a lot of theoretical researches and underground tests, and succeeded in developing numerical controlled plasma cladding wear-resisting technologyâ?� and zrf-5c numerical controlled plasma central trough cladding machine toolâ?�. The technology can make the base materials and alloy powder melt synchronously instantlyïre-melt , and produce the wear-resisting strengthened layer in original position. In doing so, the strengthened layer and base material will be metallurgically combined in depth, which greatly enhances the wear and shock resistance of metal surface, 10 times that of laser cladding in efficiency. The machine tool is especially applicable for strengthening and repairing the central through and head & tail of all kinds of scraper conveyors. It is verified by many years uses in underground coal mines that the strengthened central through by cladding is prolonged 2-3 times in service life averagely.
Equipment composition
Plasma power supply ïcladding and arc strikingïïcnc systemïpowder feederïthird generation power plasma torchïcooling systemïoperation platformïservo-actuator.

Application
1.Manufacturing wear-resisting, anti-corrosion, high temperatures resistant clad sheet steel for special purposes, such as, 4+2, 3+2, 4+4 ultra-thin clad sheet steel, 8+4, 10+6, 12+10 high density pore-free clad sheet steel. The ultra-high hardness wear resistant compound plate, whose hardness is higher than hrc70.
2.Wear-resisting various types of scraper conveyor.
3. Repair and strengthen the wore surface and new scraper conveyors head & tail.

1. Adopt NSK bearing to ensure strong load and high speed. Imported excellent tough alloy blade, which is sharp, wearable and long serving life.
2. Adopted ringfeder in drum, has the advantages of shock resistance.
3. Single bearings support, excellent welt performance, which is suitable for operation in workshop.
4. The milling depth is controlled freely.

Road Finishers, Cold Milling Machines