Method for manufacturing piercer plug
A manufacturing method and technology of perforated plugs, which are applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problem of no longer use of perforated plugs, etc., and achieve the effect of excellent resistance to deformation of the base metal
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[0105] In order to verify the effect of the present application, a piercing and rolling test was carried out using a plurality of piercing plugs.
[0106] The shape and material of the plug body (1) is the same in all pierced plugs. Table 1 shows the chemical composition of steel used in the plug body (1). In the chemical composition shown in Table 1, the balance is Fe and impurities. In Table 1, the unit of content of each element is mass %. The conditions for each pierced plug are shown in Table 2.
[0107] [Table 1]
[0108] C
Si
mn
P
S
Cu
Ni
Cr
Mo
co
W
0.15
0.50
0.50
0.008
0.004
0.01
1.0
0.5
1.40
＜0.01
3.50
[0109] [Table 2]
[0110]
[0111] In Table 2, the perforated plugs numbered 6-9 are the perforated plugs of the examples, and the perforated plugs numbered 1-5 are the perforated plugs of the comparative examples.
[0112] In the perforated plugs of numbers 6 to 9 as example...
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