Principle Producing Arc between Carbon rod and base metal,and melting down the base metal by the heat at the same time,and removing the melted metals by the high pressure air around the Carbon rod. Characteristics   Because of high speed work process,it provides high efficiency and save costs. It makes upside work easier. Owing to Arc consumes small portion of base metal by focusing only one point,momentarily at the same time high pressed air removes melted metal and cooling down,there is no high heat deformation,crack or material changes. It is easy to find welding defects on gauging side this can be inspection of welding also. And it is convenient to detect defective parts when to inspect by X-ray. It provides reduced noise and almost none fatigueless. It helps rapid cutting with clean finishing of cutting surface and lower temperature increase. It can be used to cut steel plate,base steel,amalgamated metal,stainless steel ,manganese steel and copper alloy and other kinds of metals. Characters of Carbon Rod   Carbon rod which is used for arc air process is made by mixing high quality pure graphite and processed with high pressure,with high heated with copper clothed,it has been made not to be consumed by arc heat and to resist against high heat temperature.   *Characteristics  1) Electric resistance: below 2mΩ-cm²  2) Overall gravity:above 1.65/cm²     3) Fixed Carbon: more than 98.5%   4) Hardness:Above 30(50 shore)     5) Tear resistance:300 kg/cm²       *Selection of carbon rod size  Width of groove(m.m)=rod diameter(m.m)*1.5   Process method-Arc Air Process Removing gauging welding defects   1) Adjust torch air valve and push straight forward by producing arc between carbon rod and base metal. 2) Normal angle between rod and base metal:45° 3) It is proper to keep process speed by 0.6mm/min. 4) A carbon rod can gauging 1.5m-2.5 and takes 2-5 min. 5) Carbon rod can be used until final 5cm remaining. Removing on castings 1) While producing arc between the rod and castings and with rotating rod removes metals by arc heat. 2) Bigger the process angle at base metal it can be removed deeply. Cutting 1) Keep the carbon rod straight up and push forward 2) Process speed 0.5m-2m/min 3) It cuts even stainless,casting and brass which are very hard to be cut with gas,and it cuts very fast. Making a hole   1) Normal angle between carbon rod and base metal surface. 2) Insert end of the rod into the base metal. 3) It’s downside work after inserting rod into base metal. 4) If it needs bigger hole like 3-4mm core bigger than expected,expand the circles of hole with side of the carbon rod end,then bigger hole could be made.   DC Copper Coated Blasting Gouging Rods: Designed for automatic gouging torch.Rods can be connected by male part& female part and used continuously without stub loss.   Model Dia*Length Current Range(A) mm inches B508J 8*355(430)(455) 5/16*14”(17”)(18”) 500-550 B510J 10*355(430)(455) 3/8”*14”(17”)(18”) 600-650 B511J 11*355(430) 7/16*14”(17”) 650-700 B512J 12*355(430) 15/32*14”(17”) 700-800 B513J 13*355(430)(455)(510) 1/2*(14”)(17”)(18”)(20”) 800-1000 B516J 16*355(430)(455)(510) 5/8*12”(14”)(18”)(20”) 1000-1200 B519J 19*355(430)(455)(510) 3/4*12”(14”)(18”)(20”) 1200-1400 B525J     25*430    1*17” 1400-1600     DC Copper Coated Jointed Gouging Rods:   Designed for high current users and be good at working on hard alloys and casting with high efficiency.   Model Dia*Length Current Range(A) mm inches B504     4*305(355) 5/32*12”(14”) 150-200       B505 5*305(355)   3/16*12”(14”) 200-250       B506 6*305(355) 15/64*12”(14”)     300-350       B506.5 6.5*305(355)    1/4*12”(14”)     320-370       B507 7*305(355)     9/32*(14”)     350-400       B508 8*305(355)(455)(510) 5/16*12” (14”)(18”)(20”)     400-450       B509 9*305(355)    23/64*12”(14”)     450-500       B510 10*305(355)(455)(510) 3/8*12”(14”)(18”)(20”)     500-550       B511 11*305(355) 7/16*12”(14”) 600-650       B512     12*305(355) 15/32*12” (14”) 750-850       B513 13*305(355)(455)(510) 1/2*12”(14”)(18”)(20”) 800-1000       B516 16*305(355)(455)(510) 5/8*12”(14”)(18”)(20”) 1000-1200       B519 19*305(355)(455)(510) 3/4”*12”(14”)(18”)(20”)     1200-1400       B525 25*355(455)     1*14”(17”)     1400-1600