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Referenced specification of Welding Foundation Roller Cutters

Referenced specification of Welding Foundation Roller Cutters

Drilling Fields
2019/09/03 14:25

1.Cut gap on core barrel at proper dimensions, gap-width should not be too big. Half to 2/3 height of cones should be out of barrel-top after welding. Steel plates on two sides of cones should be chamferred.(Refer Drawings attached)


2.Follow the rules that fitting direction of cones and Cone1、23 alternately.


3.Keep all cones at the same height and same round circle, protruding roller cones will be broken easily.


4.Lean5°- 7°to the direction of back cones when welding.


5.Put and cool roller cones in water, do not finish welding at short time but by steps to keep temperature at low level, especially cool the gap between arm and cone. High temperature may damage seal O-ring or lubrication system.


6.Keep the core barrel in permitted loading range, loading range of each cones is 3-5 tons.


7.Please check conditions of each cutters after lifting, correct on time to avoid further damages. Contact with us freely, warm service here all the time, your participation help us to go forward.