- EN
Composite Rod used for cutting applications is manufactured from tungsten carbide processed to produce high quality angled fragments.
Composition: NCu, tungsten carbide grits
Hardness: >160 HB
TRS: >690MPa
Description:
1. YD Tungsten carbide composite welding rod is made of cemented carbide tips and Ni/Ag(Cu)alloy. The carbide tips always be tungsten carbide crushed grits, carbide wear inserts, like the carbide star shape inserts, carbide pyramid shape inserts, shark shape inserts and so on. Sometimes, the carbide tips can be tungsten carbide powder. The economy choice is tungsten carbide crushed grits. If you want to higher durable than carbide grits, carbide inserts is better. However the cemented carbide/crushed carbide with sharp edge has excellent wear resistance and cutting ability too.
2. The hardness is 89-91 HRA, we have two types of YD rod,the matrix alloy is mainly made from Cu,Zn or Cu,Zn,Ni(9-10%),Ni will make welding rods work better with more adhesion,so the rods with Cu,Zn,Ni matrix alloy will be more expensive than the rods without Ni.
3. In brief, most of the Composite rod made using crushed sintered Tungsten Carbide grains bonded with a bronze nickel matrix,(Cu 50 Zn 40 Ni 10) with a low melting point ( 870°C ).
Sizes:
|
Item |
Size(mm) |
Grain Size(mm) |
Color |
|
YD-9.5 |
9.5 |
9.5-6.5 |
Dark Green |
|
YD-8 |
8 |
8-6.5 |
Dark Blue |
|
YD-6.5 |
6.5 |
6.5-5 |
Red |
|
YD-5 |
5 |
5-3 |
Yellow |
|
YD-3 |
3 |
3-2 |
Pink |
|
YD-10 |
10 |
10-18 |
Pale Green |
|
YD-18 |
18 |
18-30 |
Pale Blue |
|
YD-30 |
30 |
30-50 |
Pale Yellow |
Application
1. Thoroughly clean the base metal.
2. Lightly heat base material then apply flux. A little heat before applying powdered flux helps it stick to the base material, as the torch has a tendency to blow the flux away.
3. Gently heat the base material to melt flux, observe its coverage and correct any bare spots.
4. Applying a coating of Tungchip Tinning Rod can assist in the adhesion of the Composite Rod to the base material. The tinning rod can also be used to fill voids and give a smooth appearance if required.
5. Heat base material until it just begins to turn red. At this point begin applying rod to base material. The Tungchip Tinning Rod should flow onto the base material. If the Tungchip Tinning Rod balls up, it is not hot enough. Adversely, if the Tungchip Tinning Rod runs across the base material it is too hot. Care must be taken to maintain the proper temperature of the base material during application.
6. Composite Rod is sluggish and does not flow easily. How it flows can vary considerably, depending on the size and percentage of the Tungchip Tungsten Carbide Grit in the rod. Explanation of the exact technique for application is difficult but certain general advice can be given. Work slowly and gently with as little heat as possible. Allow the Composite Rod to precede the torch rather than follow it. If necessary use the rod as a pushing, packing and smoothing tool while applying just enough heat to melt the matrix. It would probably be beneficial for the beginner to practice on a scrap piece of steel before tackling the actual parts to be hardfaced. With practice good coatings can easily be made.
