 |
铝用的钻头螺纹角较大，沟幅较宽，心厚较薄，沟内的研磨较为精细，对切削铝合金材料时所产生难排屑之情形可迎刃而解，达到最高的切削效率。
材质：HSS |
 |
|
直径
D
mm |
全长L
mm |
沟长l
mm |
直径
D
mm |
全长L
mm |
沟长l
mm |
0.5 |
27 |
7.5 |
4.4,
4.5 |
86 |
56 |
0.6 |
30 |
8.5 |
4.6 |
86 |
56 |
0.7 |
32 |
10 |
4.7,
4.8 |
89 |
59 |
0.8 |
34 |
11 |
4.9,
5.0 |
92 |
62 |
0.9 |
36 |
13 |
5.1 |
92 |
62 |
1.0 |
40 |
18 |
5.2,
5.3, 5.4, 5.5 |
95 |
64 |
1.1,
1.2 |
42 |
20 |
5.6,
5.7, 5.8, 5.9 |
98 |
67 |
1.3 |
45 |
22 |
6.0 |
102 |
70 |
1.4,
1.5 |
48 |
23 |
6.1,
6.2, 6.3 |
102 |
70 |
1.6,
1.7 |
50 |
25 |
6.4,
6.5 |
105 |
73 |
1.8,
1.9 |
52 |
28 |
7.0 |
105 |
73 |
2.0 |
55 |
29 |
7.5 |
111 |
78 |
2.1 |
55 |
29 |
8.0 |
114 |
81 |
2.2,
2.3 |
58 |
33 |
8.5 |
121 |
87 |
2.4,
2.5 |
61 |
35 |
9.0 |
124 |
89 |
2.6,
2.7 |
64 |
37 |
9.5 |
127 |
92 |
2.8 |
67 |
39 |
10.0 |
130 |
95 |
2.9,
3.0 |
71 |
42 |
10.5 |
137 |
100 |
3.1,
3.2 |
71 |
42 |
11.0 |
140 |
103 |
3.3,
3.4, 3.5 |
73 |
45 |
11.5 |
143 |
106 |
3.6,
3.7, 3.8 |
76 |
48 |
12.0 |
149 |
111 |
3.9 |
79 |
51 |
12.5 |
152 |
114 |
4.0 |
83 |
54 |
13.0 |
152 |
114 |
4.1,
4.2, 4.3 |
83 |
54 |
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