螺旋钻头

Moreover drilling measures in different strata are pointed out,which are firstly drilling without slurry in part of silty clay layer,secondly adopting double-bottom bailing bit and bore directly and abandoning slurry with impact drilling rig in muddy clay layer,thirdly selecting short screw auger at low speed in gravel layer,finally choosing rock-socketed drilling tube in shaly sand layer.

指出旋挖钻机在不同地层中的钻进措施：部分粉质粘土层中可用清水或干孔钻进，淤泥质粘土层中采用双底捞砂钻头、直接用冲击钻机钻孔弃浆，圆砾层中采用短螺旋钻头低速钻进，泥质砂岩层中采用嵌岩钻筒钻进等措施，保证施工工期满足架梁节点要求。

Moreover drilling measures in different strata are pointed out, which are firstly drilling without slurry in part of silty clay layer, secondly adopting double-bottom bailing bit and bore directly and abandoning slurry with impact drlling rig in muddy clay layer, thirdly selecting short screw auger at low speed in gravel layer, finally choosing rock-socketed drilling tube in shaly sand layer.

指出旋挖钻机在不同地层中的钻进措施：部分粉质粘土层中可用清水或干孔钻进，淤泥质粘土层中采用双底捞砂钻头、直接用冲击钻机钻孔弃浆，圆砾层中采用短螺旋钻头低速钻进，泥质砂岩层中采用嵌岩钻筒钻进等措施，保证施工工期满足架梁节点要求。

Twist drill flute is an important part of the drill bit.

麻花钻螺旋槽是钻头的重要组成部分。

To get the best drill auger, a set of model drill auger and related test device were designed and manufactured. By choosing appropriate material as boring medium, a series of model test of drill auger boring into cement soil were done to study the impact of pattern of the drill auger and the screw-pitch on the holeforming torque.

为得到最优的螺旋挤扩钻头型式，设计加工了不同型式的模型钻头及相关试验装置，并选择合适的材料作为钻入介质，通过不同型式模型钻头的钻入试验，研究了钻头螺距、螺纹形状等参数对钻头成孔扭矩的影响。

The model test of drill auger boring into cement soil can easily and intuitively realize the optimization of the drill auger, and provide the basis for designing the optimized drill with least torque.

螺旋挤扩钻头钻进成孔模型试验可以方便、直观地定性实现螺旋挤扩钻头的初步优化工作，为选择所需成孔扭矩最小的最优短螺旋挤扩钻头提供设计依据。

Danyang Century Mingrui Tools CO., Ltd mainly specializes in the production of various tooling products, such as tct saw blade, diamond saw blade, hss twist drill bits, hole saw, wood flat drill bits, masonry drill bits, wood auger bits and hammer drill bits etc.

丹阳市世纪明瑞工具有限公司主要从事生产各种模具产品，如TCL通讯锯片，金刚石锯片，高速钢麻花钻钻头，开孔器，木材单位钻头，石工钻头，螺旋钻头和木锤钻头等

Carbide products company's main products: bar, long thin, box, welding blade, turning blades, rotating file of rough, spiral blade, bamboo cutter blade, the saw blade cutter rough, porous stretch mode, Blank-cold heading, roll, possession, Central, the ball, special-shaped nozzle and various parts overall carbide tools: Jingmoyuanbang, the overall carbide bit, end mills, the key slot cutter, R cutter, ball - Cutter, Reamer, small aperture boring knife blade cutter, welding-type spiral end mill and Gezhongfeibiao tool of high-density tungsten alloy products: Jingmoyuanbang, oscillator, the Pendulum, with weights, fly Benchmarking, and so on.

公司主要产品硬质合金制品：棒料、长条薄片、方块、焊接刀片、可转位刀片、旋转锉毛坯、螺旋刀片、竹木刀具刀片、锯片铣刀毛坯、微孔拉伸模、冷镦模坯、轧辊、管、环、球、喷嘴及各种异型零件整体硬质合金工具：精磨圆棒、整体硬质合金钻头、立铣刀、键槽铣刀、R铣刀、球头铣刀、铰刀、小孔径镗刀、锯片铣刀、焊接式螺旋立铣刀及各种非标刀具钨基高密度合金制品：精磨圆棒、振子、摆锤、配重块、飞标杆等。

The new structure and the county, Hebei Province China Pile Driving Machinery Factory, factory has 30 years, the company developed and produced a series of Piling Machinery total of 10 series over 30 varieties, mainly KQ series of submersible Drilling Rig, KLB walker hydraulic auger drilling rig, DZB multi-rig, CFG series pile driver, car rigs, reverse circulation drill, spiral pile driver, hydraulic walking rig, gravel pumps, drilling and engineering products and related accessories (pipe, drill pipe, drill pipe, drill bit, seal apron);.

简介： 华构牌反循环钻机效率good，反循环钻机；河北省新河县华构桩工机械厂。河北省新和县华构桩工机械厂，建厂已有三十多年，公司研制生产的系列桩工机械共有10大系列30多个品种，主要有KQ系列潜水工程钻机、KLB液压步履式长螺旋钻机、DZB多功能钻机、CFG系列桩机、汽车钻机、反循环钻机、螺旋桩机、液压步履钻机、砂石泵、工程等产品及相关钻机配件（导管、钻机导管、钻杆、钻头、密封胶圈

The new structure and the county, Hebei Province China Pile Driving Machinery Factory, factory has 30 years, the company developed and produced a series of Piling Machinery total of 10 series over 30 varieties, mainly KQ series of submersible Drilling Rig, KLB walker hydraulic auger drilling rig, DZB multi-rig, CFG series pile driver, car rigs, reverse circulation drill, spiral pile driver, hydraulic walking rig, gravel pumps, drilling and engineering products and related accessories (pipe, drill pipe, drill pipe, drill bit, seal apron);.

华构牌反循环钻机效率good，反循环钻机；河北省新河县华构桩工机械厂。河北省新和县华构桩工机械厂，建厂已有三十多年，公司研制生产的系列桩工机械共有10大系列30多个品种，主要有KQ系列潜水工程钻机、KLB液压步履式长螺旋钻机、DZB多功能钻机、CFG系列桩机、汽车钻机、反循环钻机、螺旋桩机、液压步履钻机、砂石泵、工程等产品及相关钻机配件（导管、钻机导管、钻杆、钻头、密封胶圈

Experimental results show that the cement soil can be used as boring medium for model test. Under the same conditions, the drill-type and the screw-pitch have a great impact on the required torque. In the practical application, the optimal bit should be chosen based on engineering geological conditions.

试验结果表明水泥拌合土可作为螺旋挤土模型钻头的钻进介质；在相同成孔条件下，钻头钻进所需成孔扭矩随螺距及钻型呈明显变化，在实际工程应用中应根据地层条件选择较为优化的钻头。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失