Zhuzhou, Hunan, China
Business Type: Manufacturer/Factory, Trading Company
Application of carbide drill mining bits insert
It is for making cross and X-shaped chisel cemented carbide drill bits.
K0 Type | basic sizes(mm) | reference dimension(mm) | |||||
L | H | S | R | r | r1 | ||
K026 | 26 | 18 | 8 | 180 | 13 | 0.5~1.0 | |
K028 | 28 | 18 | 8 | 180 | 14 | ||
...... | ...... | ....... | ....... | ...... | ....... | ||
K10 Type | L | H | S | R | r | r1 | |
K1016 | 16 | 12 | 6 | 30 | 8 | 0.5~1.0 | |
K1020 | 20 | 12 | 6 | 40 | 10 | ||
...... | ...... | ...... | ....... | ....... | ........ | ||
K20 Type | L | H | S | r | r1 | e | |
K2013 | 13 | 12 | 8 | 16 | 0.5~1.0 | 1.0 | |
K2015 | 15 | 12 | 8 | 20 | 1.0 | ||
K2022 | 22 | 16 | 10 | 25 | 1.5 | ||
K21 Type | L | H | S | r | r1 | e | |
K2114 | 14 | 12 | 8 | 20 | 0.5~1.0 | 1.0 | |
K2116 | 16 | 12 | 8 | 22 | 1.0 | ||
..... | ...... | ...... | ...... | ...... | 1.0 | ||
K30 Type | D | H | α | r | e | ||
K3008 | 8 | 14 | 110° | 0.5~1.0 | 1.0 | ||
K3010 | 10 | 16 | 110° | 1.0 | |||
K2 Type | D | H | S | r1 | |||
K208 | 8 | 16 | 7.6 | 0.5~1.0 | |||
K210 | 10 | 16 | 9.3 | ||||
K212 | 12 | 16 | 11.0 | ||||
K3 Type | L | H | S | S1 | r | e | e1 |
K318 | 18 | 18 | 10 | 4 | 21 | 1 | 1 |
K345 | 45 | 20 | 14 | 8 | 55 | 2 | 1.5 |
...... | ....... | ........ | ........ | ....... | ....... | ...... | ...... |
ISO Code | Grade | Density g/cm³ | Hardness HRA | TRS N/mm² | Particle Size | Application |
K20 | YG4C | 15 | 89.5 | 1600 | coarse | Suitable for making geological prospecting drill bits and mining inserts of light-duty electrical drill bits for drilling soft rock,coal formations and frill bits for drilling un-silicated rock formations |
K20 | JK05 | 15 | 90.2 | 2500 | coarse | Mainly used for making medium and small sized cemented carbide buttons of tricone bits and other drilling bits for drilling soft&medium hard rock formations, also used for making carbide inserts of other dril bits |
K20 | YK05 | 14.9 | 90.1 | 2600 | coarse | |
K20 | YK06 | 14.9 | 91 | 2450 | middle | |
K30 | YG8C | 14.75 | 89 | 2000 | coarse | Mainly used for making cemented carbide buttons of tricone bits and other drilling bits for drilling medium hard & hard rock formations , also used for making carbide inserts of other dril bits |
K30 | YK08 | 14.7 | 89 | 2400 | coarse | |
K30 | YK09 | 14.5 | 88 | 2600 | coarse | |
K40 | YK10 | 14.45 | 88.5 | 2600 | middle | Suitable for carbide inserts of heavy-duty rock drilling tools for drilling hard and super hard rock formations , also used for making tricone bits and other dril bits |
K40 | YK20 | 14.4 | 87 | 2700 | coarse | |
K40 | YK25 | 14.45 | 87 | 2700 | coarse | |
K40 | YG11C | 14.4 | 87.8 | 2700 | coarse | With super toughness and corresponding wear resistace, suitable for carbide inserts of heavy-duty rock drilling bools and DTH drilling bits for drilling hard and super hard rock formations,also used for other cemented carbde buttons bits |
K40 | YG13C | 14.2 | 86 | 2600 | coarse |
1. promise the 100% virgin material .
2. Sintere by vacuum sintering furnace and HIP machine with excellent specifications without any hole.
3. suply blank and surface passivation.
4. tungsten carbide button's high hardness of the cemented carbide and other characteristics are widely used in mining and quarrying and cutting process, also may be placed on a heavy excavators used in bit.
5. we can product the goods according your drawing and sizes.
6. our new product grade's grain size can up to 6.0μm,highest wear-resisting and excellentest impact resistance.
Carbide production The productionprocess of powder-metallurgical products basically includes the four steps of powder preparation, forming, sintering andfinishing. Tungsten carbide production The APT (ammonium para-tungstate) is calcined into tungsten oxide under high te-mperature. Subsequently the oxide is reduced to tungsten metal in a hydrogen atmosphere. The metal powder is then mixed with carbon and carburised under inert atmosphere at high temperatures. The production parameters are decisive for the WC grain size in the sintered carbide. Powder preparation The tungsten carbide is intensely mixed with the binder metal cobalt, nickel or iron, various grain growth inhibitors and materials, which promote compaction, by wet grinding so that a homogeneous suspension is created. Afterwards, the suspension is dried in a spray tower to produce a granulate with good flow characteristics. This granulate represents the basis for all forming processes. Metal forming The objective of the forming process is to obtain a near net shape sample. Pressing is normally carried out at room temperature with pressures reaching up to several tons per square centimetre. There are several ways of pressing blanks: During isostatic cold pressing the powder is filled into an elastic flexible hose and pressed into a compacted form through high liquid pressure. The powder blocks which are produced in this way can then be processed mechanically. All common machining methods like milling, cutting, drilling or turning may be applied. In uniaxial pressing the pressing tool consists of a die and an upper and a lower punch. The carbide powder is filled into the die and then compacted to create the so called green carbide, which is ejected from the pressing die. Extrusion pressing is mainly used to produce rectangular bar or cylindrical rod, with or without axial hole(s). A plasticiser is added to the powder. The resulting paste is pressed through an extrusion nozzle. Before sintering, the plasticiser must be evaporated in special drying furnaces. Metal Injection Moulding (MIM) is a process used to produce more complex forms which cannot be produced by direct pressing. The paste preparation is similar to the extrusion process. Sintering process The sintering process converts the blank into a homogeneous and dense carbide with a high level of hardness. The material is sintered at temperatures between 1,300 and 1,500 °C (liquid phase sintering) and sometimes also at high pressure (up to 100 bar). The volume is reduced by up to 50 % during this process. Finishing In order to achieve the final requirements of surface finish, tolerances, etc. carbide parts can be subjected to a series of finishing processes such as grinding, spark erosion and coating. |