Your current location: Home > News > News

How does the Plasma(PTA) cladding repair the hydraulic rod?


The flowing of high temperature plasma beam makes the alloy powder heated rapidly and it is together with the matrix of cladding, mixing, reaction, solidification, etc., And then, it would realize harden and strengthen on the surface which formed a wear-resisting layer to be high hardness and high bonding strength after being cooling.

Advantages of plasma cladding:
The bonding strength of workpiece and the alloy layer is high in form of the Metallurgy and it would be up to 900Mpa by testing. 

Second, the dilution rate is low, which can be reduced from 30% above of the traditional surfacing arc to 5%.

Three is the plasma cladding layer surface uniform, beautiful appearance, can be in the rust oil workpiece surface without the complicated pretreatment process.

Plasma arc energy concentration, good stability, little deformation with the workpiece after cladding.

Good controllability, by changing the current, voltage, gas, powder speed, flow and other parameters, to achieve efficient automatic production, high film-covering efficiency.

Similar to laser cladding, the environmental pollution in the surfacing process is reduced, especially the large amount of pollution of gas and waste water in the electroplating.

Hydraulic rod repair process:

Cleaning (oil removal and rust removal) workpiece surface (oil removal and rust removal)→ coarse car cleaning fatigue layer (original chrome plating layer)→ micro beam plasma cladding → defect repair → fine car cladding surface → fine grinding surface → polishing finished product.
Compared with laser cladding, the micro-beam plasma cladding method has a great improvement, but it still has the following aspects:
A cladding powder is consistent with a laser cladding powder;The service time (wear resistance, corrosion resistance, bonding strength, etc.) is equivalent to that of a cladding powder.

Laser cladding alloy layer thickness is generally 0.3mm/ time, if the workpiece wear is serious, the cladding layer thickness can be up to 1mm, the cladding period is longer.The thickness of microparticle cladding alloy layer is 0.8~1 mm, especially the cladding rate is higher.

Original equipment cost (including tooling, fixtures, etc.): the price of 1 million kW (domestic) laser cladding equipment is more than one million yuan, and the cost of micro plasma cladding equipment is about 200,000 yuan, less than 1/5 of the cost.

Cost accounting: the cost of the piston rod of the laser cladding layer is generally 33-38/ square decimeter, and the small edition of Duomu Industry understands that the cost of the piston rod of the plasma cladding layer is generally 20-25/ square decimeter.



dial navigation search