By analyzing the feasibility and the effect factor to internal boring repair craftwork of decollation bolt in certain ship main engine cylinder, the paper offers practicably feasible craftwork scheme, obtaining favorable repair result.
通过对某轮主机缸体断头螺栓镗孔修理的可行性、施工影响因素的分析,提出了实际可行的工艺方案,获得了良好的施工效果。
The causes to loosening of folding head bolts in operation are analyzed.
分析了运用中折头螺栓松动的原因 ,并通过 3种试验检测方法证实了原因分析的正确性 ,最后提出了相应的改进措施。
bolt or cotter-pin drill
螺栓或开尾销孔钻头
To drive(a screw or bolt)into a countersink.
将钻或螺栓置入埋头孔
suction valve bolt and split pin
吸入阀螺栓及开尾销
Bolts with drilled or undersize heads shall not be used.
被钻孔或头部尺寸太小的螺栓不能使用。
A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下
insert(a screw or bolt)into such an enlarged hole
将（螺钉或螺栓）旋入埋头孔中.
An awl with a beveled tip, used to make holes in wood for brads or screws.
锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉
A tool for boring holes in wood or ice.
螺旋钻，木螺钻一种用于在木头或冰上钻孔的工具
a round-headed bolt for timber; threaded along part of the shank; inserted into holes already drilled.
加工木料用的圆头螺栓；部分连杆有螺纹；可以插入事先钻出的孔中。
counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
" Bolts, small hexagon head with fit neck and hole through the shank"
GB/T24-1976小六角头螺杆带孔导颈螺栓
" Bolts, small hexagon head with hole through the shank"
GB/T23-1976小六角头螺杆带孔螺栓
Hexagon bolts with split pin hole on shank--Product grade A and B
GB/T31.1-1988六角头螺杆带孔螺栓A和B级
Hexagon bolts with split pin hole on shank--Reduced shank--Product grade B
GB/T31.2-1988六角头螺杆带孔螺栓细杆B级
tap(ping) drill
螺丝孔钻，螺丝底孔钻
Hexagon bolts with wire holes on head--Reduced shank--Product grade B
GB/T32.2-1988六角头头部带孔螺栓细杆B级
" Bolts, small hexagon head with fit neck and holes through the head"
GB/T26-1976小六角头头部带孔导颈螺栓
Hexagon bolts with wire holes on head--Product grade A and B
GB/T32.1-1988六角头头部带孔螺栓A和B级