How to Insert Carbide Buttons into a Drill

Carbide buttons, also called carbide button inserts, carbide button tips, are worldwide in mining, quarrying, milling, digging, and cutting. It is attached to a drill bit. In modern industry, there are two kinds of methods to insert tungsten carbide buttons into drill bits. They are hot forging and cold pressing.

1. Hot Forging

Hot forging is a common way to insert tungsten carbide buttons into a drill under a high temperature. Firstly, workers should prepare tungsten carbide buttons, drill bits, flux paste, and alloy steel. Flux paste uses to wet the copper alloy and help to forging the tungsten carbide buttons into the drill bits. Then, heat the copper steel at a high temperature to melt. At this moment, it is easier for tungsten carbide button bits to insert into the holes. Hot forging is easy to operate but asks for high temperature. In this way, tungsten carbide button tips and the drill bits are less damaged and have better stability. So workers deal with products with high requirements in this way.

2. Cold Pressing

Cold pressing is also applied when workers insert cemented carbide button inserts into a drill bit, which demands button teeth a little bit larger than the holes of drill bits but must strictly follow the field limit of the drill bits. Workers need to prepare cemented carbide button inserts and drill bits. Then, put the cemented carbide button inserts above the hole and press by an external force, which can be achieved by human power or a machine.

This process is also easy to operate and highly efficient. But it has strict demand for the tolerance of cemented carbide button tips; otherwise, it will be easily flawed. This method has its disadvantages. The service life of the production will be limited, and the buttons are easy to lose or break during their work. So workers prefer to use this method to deal with products with low requirements.

Hot foring and cold pressing have their advantages and disadvantages. Hot forging requires a high temperature and will not damage the buttons and drill bits, keeping them in better performance, while cold pressing is easy to operate but easy to damage the drill bit. These two methods can also apply to fix the buttons.

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