3. Tooling design and manufacturing instructions tooling shown in Figure 4 ~ Figure 8.
(1) The sample materials are Q235A and δ3 steel plates.
(2) The file material must be 3Cr2 W8V. After machining the body, the δ2 ​​saw blade cutter is used to cut two pieces. The welding rod with the protection pad is graded D337. The two base metals are preheated to 500-550 °C before welding, and heat-treated to C45 in time after welding.
(3) Pressure ring, sample plate, forming boring tool and flat ring, used after custom welding handle.
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