Sample applications

Drilling industry

The drilling industry demands extremely high standards of quality and process stability, especially to protect the environment as gas and oil are extracted.

KVT Kurlbaum AG plays an important part in ensuring compliance with these standards and keeping drilling both efficient and cost-effective.


Sample applications 

1. Stabilizer

Industries: Drilling industry, deep-drilling, tunnel drilling 

Context: 

Wear-resistance to guard against abrasion 

KVT solution: 

Coating method: QuickTip cutting and wear 

Coating material: KVT 406® 

Base material: Alloyed and unalloyed steels 

Benefits to the customer: 

Using what is known as the QuickTip method, 4-mm-thick hard metal plates made of tungsten carbide are welded together. The gaps are filled with a nickel-based alloy and then ground to an even finish. This method is not restricted to any particular material and can be used in conjunction with both steels and stainless steel. It also allows partial repairs to be made to an assembly and delivers an extremely resilient, 4-mm-thick wear-resistant protective coating. 

2. Guide rail/abrasive wear-resistance

Industries: Drilling industry, deep-drilling, tunnel drilling 

Context: 

Service life extension 

A sufficiently thick wear-resistant coating has to be bonded to the substrate to ensure that it does not flake off. At the same time, the coating must comply with strict dimensional tolerances despite its thickness. 

KVT solution: 

Coating method: Laser power welding 

Coating material: KVT 433® 

Base materials: 1.0570 and 1.3964 

Benefits to the customer: 

Laser power welding combines powerful adhesive strength with the ability to finely dose thermal stress to the base material, thereby keeping it both minimal and superficial. All the mechanical and magnetic properties of the substrate are thus preserved, with any superficial influence restricted solely to the welding zone. 

We use a particle-reinforced tungsten carbide such as KVT 433® as the coating material. This stainless steel-based coating provides adequate protection against abrasion and corrosion. It is made from 60 percent fine-grained tungsten carbides in a softer nickel matrix. Extreme pressure deforms the component. However, thanks to the elasticity of the coating itself and the outstanding adhesion realized by laser welding, it does not cause the coating to flake off. 

Both the classic St52 carbon steel and the stainless steel 1.3964 are perfectly suited as base materials for laser deposition welding. The wear-resistant coating creates the benefit of faster drilling speeds and, hence, faster realization of targets. 

Service lives can be extended by applying a sufficiently thick (1.0 mm) tungsten carbide coating. Compliance with coating thickness tolerances of ±0.1 mm can be achieved. 

Why KVT?

What sets us apart

Whenever abrasion, high temperatures, high pressure levels, large numbers of cycles and high flow velocities are critical factors, we are the people to talk to.

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