When expanding the heat exchange tubes, how is the rectangular groove inside the tube holes created?
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As the title suggests, what kind of cutting tool is used, and what processing method is employed??? Those who have done this, please share your experiences!!! Thank you!!!
Could you give some information from a pressure vessel manufacturing plant??? Thank you!!!
You can look it up online; there are special grooving tools, and the amount of material removed corresponds to the depth of the groove
A double-blade grooving tool will do; it’s available for purchase at Wujiang City Gulixiang Tube Expander Co., Ltd.: victory:
Special tools for machining and grooving holes in heat exchanger tube sheets are available from manufacturers that produce expansion tubes and expansion head fittings.
A slotter can be used for this; it’s available for purchase at Jinfei Precision Hardware in Tongli, Wujiang City, and it offers a good cost-performance ratio
You can refer to standard GB151; there are requirements regarding how to make the grooves
There are manufacturers in this industry that specialize in producing such devices, and there are also ready-made products available
There are specialized grooving tools that can be attached to a drill to create grooves in pipe holes; these tools allow for the creation of both rectangular and V-shaped grooves
You can make one by yourself; it’s for use with a swing arm drill. If it is for use on a CNC machine, buy a professional one