Method for sampling metal material sample

Abstract

The invention discloses a method for sampling metal material sample, comprising the following steps: confirming the diameters of a gun drill bit and a twist drill bit according to the widths of the sampling space and the sample; using a gun drill to make jump drilling along the central line of holes to be drilled of the material to be sampled; filling the gun drilling holes by using pin shafts with the diameter being the same as that of the gun drill bit; drilling at all intervals of the gun drilling holes by using the twist drill bit with the diameter being the same as that of the gun drill bit; taking out the pin shafts inside the gun drilling holes; and prying the sample material by a plunger chip, disconnecting the gang drill virtual connecting part and taking down the sample material. By adopting the gun drill jump drilling and plugging the pin shafts into the gun drilling holes, the method solves the problems that deflection easily occurs when the gun drill is used for continuously drilling holes in a way of gang drill, the gun drill bit is broken off and can not be taken out, and the bits are deflected and broken off in the process of drilling the holes. As the method solves the problem that the bits with smaller diameters are broken off and deflected, so as to be applicable to taking the sample material in smaller space.

Description

technical field [0001] The invention relates to a process scheme for sampling samples, in particular to a sampling method for metal material samples. Background technique [0002] In order to test the performance and physical and chemical indicators of metal materials, it is usually necessary to intercept the test samples of metal materials. Sampling methods currently used include sawing, row drilling and other methods. However, due to the limitations of the volume and shape of the parts, especially when it is required not to damage the surrounding body, there are problems in using these two methods. For example, the sample interception of the weld filler material after welding can only be done by twist drill bit row drilling, but there are the following problems in practice: affected by the size of the weld, the width of the sampling position under normal circumstances is uniform. It is less than 24mm, and the width of the removed sample is 10mm, and the depth is 100mm. I...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention proposes a sampling method for metal material samples, which can take samples of specified size in the required small space, and solve the deflection that the drill bit is prone to occur during the sampling process. and broken problems

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