The drilling jumbo rig is the main drilling equipment in the underground hard rock mine. Jumbo Drill Rig,Jumbo Drilling Machine,Mining Drilling Machine,Underground Tunnelling Machine Henan YK Prospecting Machinery Co., Ltd , https://www.yyphotovoltaicpilingrig.com
We are a professional designer and manufacturer for all kinds of high quality parallel twin screw barrel for extruders. Pls check the specifications as below:
Diameter: Dia45mm-Dia200mm
L/D ratio: 16-35
The compression ratio of screws can be designed according to different products and ingredients, and Cincinatti, Krauss Maffei, Battenfeld, Weber, Amut, Baosano designs are available.
Our advantages:
1)High-quality raw material
2)On time delivery
3)Competitive pricing
4)Reliable products and full technical support
Basic technical info as below:
Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
Technics:
1)Heat treatment
2)Nitriding treatment
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
If you need bimetallic or hard-chrome electroplated products, more info. Will be sent according to your requirements.
Manipulator drilling rig with high level of automation and computerization is not very attractive to mine.
The mine hopes to use the trolley with compact structure, flexible movement, high reliability, high efficiency and high accuracy.
Small enough to enter the shaft through a small section;
Maneuverable and flexible enough to walk in winding and inclined passages;
The versatility can be used to drill hole, bolt hole and cut hole in all directions.
In recent years, several major rock drilling equipment manufacturers in the world, in order to meet the requirements of mechanized mining of thin ore bodies, have successively developed a variety of small rock drills with high power, which can be used to complete the rock drilling operations that could only be completed by pneumatic drill, so as to significantly improve the efficiency of rock drilling and reduce ore dilution rate.
Parallel Twin Screw and Barrel
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