为准确分析套管固井滑套长时间在固液两相流中冲蚀后的磨损情况及可靠性,在进行冲蚀理论分析和数值模拟的基础上,利用研制的冲蚀磨损试验装置,研究了特定工况下固井滑套带孔短节的冲蚀磨损情况,分析了滑套孔眼冲蚀磨损速率与孔眼数量、砂比及排量的关系,建立了冲蚀磨损速率新模型,研究了滑套带孔短节孔眼过流能力与冲蚀磨损速率的关系;同时,结合数值分析结果和试验数据,得到了A型材质滑套短节的冲蚀磨损系数。研究结果表明,当滑套孔眼为2个时,含砂流体对滑套孔眼周边的冲蚀磨损较为明显,且滑套孔眼冲蚀磨损速率与砂比呈线性关系,与排量呈指数关系。该研究结果可为套管固井滑套可靠性评估提供理论依据,且能够指导滑套压裂工具的现场应用。

In order to analyze the wear rate and reliability of cementing sliding sleeve after high dis-charge ,high sand-fluid ratio and long-term erosion of solid-liquid flow ,downhole tools’ erosion and wear were researched based on the erosion theory and numerical simulation .The effects of the number of ports , sand concentration and displacement on the wear rate were analyzed .New test equipment was designed and built to test the erosion wear of port collar of cementing sliding sleeve under certain working conditions .A new model of erosion rate was established and more research was conducted about the flow capacity of port collar of cementing sliding sleeve and its effect on the rate of erosion wear .By combining numerical analysis and test data ,the erosion coefficient of cementing sliding sleeve made by type A material was obtained .Re-sults showed that the hole erosion was more severe when the cementing sliding sleeve contains two holes . The erosion rate had a linear relationship with

汽车同步器齿套的滑块槽属难加工内表面。介绍了滑块槽加工工艺的国内外现状和加工原理，建立了切削滑块槽飞刀的数学模型，设计了加工齿套滑块槽部位的刀具。经过强度和刚度分析，证明刚度问题为首要校核目标。通过优化设计得到基于等刚度原理的飞刀结构，实践检验证明该刀具是适用的。

The gear sleeve of automotive synchronizer is difficult to process.In this paper,the processing technologies of gear sleeve in the world were introduced as wel as the machining principle.The gear sleeve flying cutter cutting mathematical model was established.By means of strength and stiffness analysis,the stiffness is the most important checking target.Special con-stant stiffness cutting tool of the gear sleeve was designed for numerical control machine,and it is proved that the cutting tool is suitable for cutting.

根据抽水蓄能机组的结构特点,介绍了抽水蓄能机组上导滑转子加工工艺和热套工艺过程,通过对绝缘包绕工艺的分析,并采取有效措施,优化工艺方法,使得中间环包绕绝缘后与滑转子一次性热套成功,验证了工艺过程的可行性,为今后抽水蓄能发电电动机滑转子制造及装配提供了技术参考。

Based on structure characteristic of pumped hydro storage, this paper introduced the pumped hydro storage upper bearing collar machining and heat setting technological process. After analysis of insulation wrapping technology, the effective measures and optimized technological method was adopted to make upper bearing collar heat setting successfully in one time after intermediate insulation wrapping. The feasibility of the technological process was verified, which provides technical reference for future pumped hydro storage upper bearing machine and assembling.

水平井裸眼分段压裂技术作为低压、低渗透油气藏开发的重要增产措施之一,近年来在苏里格地区得到大力推广应用。套压阀是水平井分段压裂配套工具的重要组成部分,主要为压裂施工后期提供气举通道和套压监测。针对水平井施工中出现的套压阀压力打开不稳定的问题,设计了内置滑套式套压阀,利用油套压差剪断剪钉推动内置滑套移动并锁紧。同时,给出了入井管柱结构和施工工艺。该结构设计合理,打开压力稳定,能够满足现场压裂施工要求。

The staged fracturing technique for open hole horizontal wells is efficient for reservoirs with low pressure,low porosity and low permeability and has been widely applied in Sulige gas-field recently.Casing valve is the important part of matching tools for staged fracturing which is mainly for providing gas lift channel and casing pressure monitor.With respect to instability prob-lems of open pressure,casing valve of built-in sliding sleeve was designed and differential pressure between oil pipe and casing pipe cut the shearing pins and inner barrel went down to be locked. Meanwhile,running string structure and construction technology was also proposed.The design of structure is reasonable and open pressure is stable and field fracturing requirements can be sat-isfied.

滑块槽和倒锥是汽车同步器齿套的主要部位，由于属于内表面且表面形状略复杂，因此属难加工表面。首先介绍了滑块槽加工的国内外加工现状和基于摆线旋分原理的加工方法，从数学模型上计算了其加工的理论误差。然后建立了切削滑块槽飞刀的数学模型，在拥有自主知识产权的旋分数控机床和市场上通用的可转位刀具基础上设计了加工齿套滑块槽部位的专用刀具。经过实践检验证明该刀具是适用的。

The gear sleeve of automotive synchronizer is difficult to process.In this paper,the processing technologies of gear sleeve were introduced,and the machining principle and theoret-ical error of cycloid rotational indexing were analyzed.The cutting mathematical model of gear sleeve flying cutter was established.Special cutting tool of the gear sleeve was designed for nu-merical control machine,and it is proved that the cutting tool is suitable for cutting.