What is the housing column mining method? Under what conditions?

2023-06-02 22:08:56

The room and column method is used to mine horizontal and gently inclined ore bodies, but it is more widely used than the comprehensive method. The room and pillar mining method is based on dividing the mining unit, and the mining room and the ore column are alternately arranged. The first step is to firstly mine the house. , leaving a regular continuous strip of pillars or discontinuous pillars to maintain the roof of the goaf. These pillars unless noble metal ore grade or higher, are generally not recovered, this method can not only be used to mine ore mining thinner (thickness less than 2 ~ 3m), and can be thick and very thick ore mining. The ore and surrounding rock are both stable and gently inclined ore bodies.

CNC Turning

CNC Turning is namely Lathe machining, Lathe machining is a portion of mechanical processing.

Lathe machining is always a process that turning tools doing turning machining to a rotary workpiece. On CNC lathes, the operators or the engineers also can use drills, reamers, screw taps, threading dies and knurling tools to make relative machining work. CNC turning is usually applied to machining shafts, plates, bushings and all other workpieces which have rotary surfaces, it is a very widely application in practical mechanical manufacturing.

CNC turning can be divided into rough turning and finish turning, rough turning is for the purpose of machining with big cutting depth and big feed rate, to improve the machining efficiency. However, the precision of rough turning can only be grade IT11, the surface finish can only be Ra 20-10um. On the contrary, semi-finish machining and finish machining usually can only apply high speed but small feeding rate and cutting depth. In this condition, the machining accuracy can be up to grade IT10-7, the roughness can be Ra10-0.6um.

Cnc Turning,Cnc Machining Parts,Die Casting,Aluminum Castings,Malaysia Aluminum Die Casting,Malaysia Aluminum Parts

NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY , https://www.aldiecastings.com

Post navigation

Previous Post: Precautions that are often encountered in three roller gates →

Next Post: Separator safety production job duties →

Home

Recent Posts

  • China Nylon Wheel Ce Manufacturers…
  • in-Lineas Oil Petrochemical Hydroc…
  • Analysis of China's graphite e…
  • Do you know the latest blue card c…
  • Stainless Steel Double-Deck Servic…
  • Nitrided Rubber Machine Single Scr…
  • Dryer wants to dominate the market…
  • Roller/Brush Cleaner Food Bag High…
  • Brand competition fierce lighting …
  • Marine Deck Equipment Towing Ancho…
  • Baoding grab wood machine performa…
  • Good Quality China Stamping Rotava…
  • High Quality Circular Saw Knife Gr…
  • Auto Alternator for Magirus-Deutz …
  • Billet Aluminum 7075 Motorcycle Di…
  • Rubber Flap Check Valve for Water
  • 澎湃Power detail analysis Levo n…
  • Plastic Color Masterbatch Mixer (V…
  • 304 Stainless Steel Hight Quality …
  • Color Nickel Customized Step and S…