CRE545 Reverse Circulation Hammers 5" Rock Drill Weather Proof Non Rusting

 

 

 

技术参数 Technical  Date

总长(不含钻头) Length(Less bi)

总重(不含钻头) Weigth(Lass bit)

冲击器外径 Etermal diameter

可佩钻头钎柄 Bit Shank

钻孔范围 Hole range

后接头螺纹 Connection Thread

1261mm

65.0kg

φ117.5mm

RE545

中122- φ135

4"-4.5"Remet 4"-4.5"Metzke

可用工作风压 Working Pressure

在2.4Mpa时 的冲击频率 Impact rate at 2.4Mpa

耗风量 推荐转速                         Air consumption

Recommended rotation speed                             1.7Mpa

2.4Mpa

3.0Mpa

1.5-3.5Mpa

35HZ

25-40r/min

16m³/min

22m³/min

28m³/min

 
Advantages:  
  R.C.Drilling, referred to as " Centre Sample Recovery" or " Dual Wall Drilling",employs a Dual Wall Pipe where the drilling medium, normally high pressure air,is passed between the outer and inner tubes down to the face of drilling bit where it is returned up the centre tube along with the sample cut by the drill bit.   
 
  1. No contamination  
      The R.C. System collects sample through the recovery holes in the face of the drill bit immediately as the cuttings or sample is formed.The drilled sample does not have to travel the length of the harmmer where contamination and loss of sample takes place.  
 
  2. Higher Production  
      In broken and fractured ground conditions, the R.C.will often out perform the conventional hammer in terms of penetration rates.  
 
  3.Dry Sample  
     Even in certain water bearing stratas it is still possible to collect a dry sample because the cutting (sample) are collected as they are formed throught the face of the drill bit.  
 
  4.Higher Sample Recovery  
     Because the sample is collected through the face of the drill bit there is no loss of sample when drilling through broken or fractured ground. And since the bit matched to the chuck size, there is very little by pass of sample and recovery rates of up to 98% are generally achievable.