冲杆

B Through theoretical and experimental studies, the paper investigats the relationships between hammer geometer and stress waveform generated by the hammer. After the mechanical meanings of linear model used by others are demonstrated, a simple expression of rigidity of an equivalent spring for direct impact between a hammer and a rod is obtained. Based on the above work, a mathematical model and numerical method for the impact of the hammer with progressively changing cross-section on the rod are presented.

2应用理论分析和实验研究相结合的方法，探讨了冲击应力波波形和冲锤形状尺寸之间的关系；阐明了冲锤与杆撞击局部变形的线性模型的物理意义，继而分析讨论了冲锤端头曲率半径与撞击弹簧刚度的关系；在此基础上，提出了连续变截面冲锤与杆撞击的数学模型和计算方法。

This paper systematically provides an overview of recent developments in small punch test technology including empirical and computational methods for determining elasto-plastic parameters from the measured data of small punch test. The computational methods involve finite element and parameter method, inverse finite element procedure, finite element and inverse methodology, inverse identification based on artificial neural networks, finite element optimization, shape deformation and hybrid inverse procedure et al.

本文系统综述小冲杆试验的测量技术及从测量数据来确定材料弹塑性参数的各种经验方法和计算方法，例如有限元分析和参数法、反向有限元法、有限元和反方法、反向识别和人工神经网络、有限元优化和试验变形形状以及杂交反方法等。

When a spiral coil spring rotates an adapter while the webbing belt is fitted and a plunger is coupled with a ratchet wheel, a torsion coil spring is wound on the adapter.

安全带被系上后，在一根冲杆卡住一个棘轮的状态下，当一个盘簧转动一个承接件时，一根扭转螺旋弹簧在承接件上旋紧。

The product mainly serves the die making…The main product includes: The drift, floats rises the tree top/roof bar, the request needle, the flat thimble, the guide pillar, the guide sleeve, the auxiliary/ball bearing guidance, the independent guide pillar, the pould frame, the ball bearing wrap, the date chapter, the punch press safety/sheet iron separator, the counter, the mold spring, the filter, the contour sleeve, the feather piece, hit the screw, the roof bar, Si Tong, the runner wrap, silver steel, the screw rod, the nut, the engine bed appendix, the anaerobic glue water, the rust-preventing agent/release agent, the side lathe tool, a Yuan lathe tool, the flat lathe tool, the tipped tool, the grinder to approve the gentleman the milling cutter, to drill ju, the screw die, the thread chaser, the spanner, the polishing polish thing, the thread plug gage, the resin shutter, the suspension loop, wash the slate pencil, the cowhide wheelhead, the rubber wheelhead, the steel figure, the wool wheelhead, the sponge the wheelhead, the red lead, the emery paste, the province copper paste, the oilstone, the diamond attrition fat stone, to divide the stick, in six jiao spanners, the measuring instrument, to drill the cartridge, to frustrate the knife, the knife handle, the knife grain, to stop the cock, the molybdenum silk, the dresser, the cutting piece and so on nearly hundred kind of mold hardware fitting.

产品主要服务于模具制造…主要产品有：冲头、浮升梢/顶杆、托针、扁顶针、导柱、导套、辅助器/滚珠导向件、独立导柱、模架、滚珠套、日期章、冲床安全器/铁板分离器、计数器、模具弹簧、过滤器，等高套筒、销钉、塞打螺丝、顶杆、司筒、浇口套、银钢支、螺杆、螺母、机床附件、厌氧胶水、防锈剂/脱模剂、方车刀、元车刀、扁车刀、焊接车刀、磨床批士铣刀、钻咀、丝攻、板牙、扳手、抛光打磨用品、螺纹塞规、树脂开闭器、吊环、洗石笔、牛皮磨头、橡胶磨头、钢字码、羊毛磨头、海棉磨头、红丹、钢砂膏、省铜膏、油石、钻石研磨膏油石、分中棒、内六角扳手、量具、钻夹头、挫刀、刀把、刀粒、止水栓、钼丝、打磨机、切割片等近百种模具五金配件。

Ensure with each setting that the compaction force of the prepared punch exceeds the tolerance limit plus.

确保每个标记的压片冲杆的压力设定超过压力正偏差。

The compaction force of the prepared punch is lying outside the tolerance limit plus.

标记冲杆压力在正偏差之外。

The study represents a new method of evaluating material yield strength in small punch test.

为最终通过小冲杆试验评价材料的屈服强度提供了一条新的思路。

During overpassed 20 more years, as a kind of new experimental technology, small punch test for measuring small size specimens has been developed to evaluate the material mechanical properties of in-service equipments. It is already used to determinate the elastic modulus, yield stress, plastic properties, endurance strength, ductile-brittle transition temperature, fracture toughness, creep properties, plasto-viscous properties and so on.

20多年以来，采用小型试件的小冲杆试验技术来测量在役设备材料的各种力学参数已经取得了很大进展，这个方法已经用来确定材料的弹性模量、屈服强度、塑性性能、抗拉强度、韧－脆转变温度、断裂韧度、蠕变性能和黏塑性性能等各种力学性能。

Mainly thimble, reset rod, Secretary extinguishers (use of international standards such as the Japanese JIS, German DIN); SUJ2 derivative bearing steel columns, Introduction sets (using the Japanese "Fu Aventis" standard); jack mouth S45C high-quality steel products (use of international standards ), SKD11 Chong-pin, SKH51 straight needle, SUJ2 straight needle; there straight guide columns, occasional columns, sets of straight guide, care kits, gate kits rod guide column, bar ring, oblique derivative columns, quenching cylindrical, silver steel bars, flat die springs, black line round springs, high-speed steel Chong-pin, water Tsui, positioning ring, locking independent guide columns, sliding-oriented pieces, rolling-oriented pieces, heating tube , dual electric, high temperature wire, insulation casing, Nagarze wiring accessories such as mold.

主要有顶针、复位杆、司筒（采用国际标准如日本JIS、德国DIN）；SUJ2轴承钢导柱、导套（采用日本&富特巴&标准）；唧觜选用优质S45C钢材，SKD11冲针、SKH51直冲针、SUJ2直冲针；还有直导柱、托柱、直导套、托套、浇口套拉杆导柱、拉杆挡圈、斜导柱、淬火圆柱、银钢枝、模具扁弹簧、黑线圆弹簧、高速钢冲针、水咀、定位圈、锁扣独立导柱、滑动导向件、滚动导向件、加热管、电热偶、高温导线、绝缘套管、接线卡子等模具配件。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。