Together these elements make it possible to drill holes in the hard rock. The excess material (cuttings) is flushed
up from the bottom of the hole by means of pressurized air or
water. Top hammer drills are primarily used in mining, construction and quarrying of
Top hammer drilling principle
1. When the piston hits the shank, kinetic energy in the piston
creates a compressive wave in the string of drilling tools, that
will cause the bit to penetrate the rock
2. Piston velocity at impact ≈ 10m/s but the compressive wave in
the drill steel travels at a velocity of 5180 m/s (velocity of
sound in steel)
3. The bit is forced forward and penetrates the rock around 1.0 mm
4. Part of the energy not used to penetrate the rock goes back as a
tensile wave and part of it as a compressive wave
Sollroc tophammer drilling tools has advantages as follows:
1. Material is from Baosteel with strict process of steel smelting
and rolling: Refining - Vacuum - Continuous casting - drilling hole
method - surface peeling to control the content of non metallic
inclusion and harmful element.
2. Material are developed by cooperated with National & Local
Joint Engineering Laboratory for High-performance Metal Structure
Materials and Advanced Manufacturing Technology to improve the
fatigue resistance of drilling steel.
3. Thread strengthen: enhance the thread parts to improve the
wear-resistance and longevity of the rod.
4. Strictly control precision thread process to avoid thread too
hot and broken effected by the high vibration and shaking of thread
part when it works.
5. Heat treatment: Fully Carburization - Air cool quenching -
tempering. It make the rod keep high toughness and improve surface
harness and whole strength as well.
Package and shipping
Package: Carton+plywood case, or as request.
Shipping: By sea, by air, by express, as your request.
Catalog of T60 tophammer drilling tools
Sollroc , with more 10 years of experience ,is one of the
professional manufacturer and supplier of high performance rock
drilling tools like: DTH hammers and bits, RC hammers and bits, DTH
drill rods and top hammer drilling tools. Our tools are widely used
in different drilling applications including mining, quarrying,
water well drilling, geotechnical industries and etc.
Sollroc is specialized in designing, manufacturing and developing
equipments and accessories for standard models as well as the
special needs of clients and provides them with the best
suggestions and solutions. We practice strict and stringent quality
control during manufacturing and adhered to recognized and approved
quality control systems. Each of our products follows the quality
requirements and procedures to ensure finished products are durable
and superior up to standard.