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Through analyzing on the upper part of oil box and the design of the drawing die structure,the characteristics of the low melting point alloy were described,and discussed the characteristics of low melting point alloy die and the application in plate materical drawing process, the attention problems of die design were pointed out.

以分析油箱上体工艺特性和设计其低熔点合金拉伸模具结构为例，论述了低熔点合金材料的特点，介绍了低熔点合金模具的特点及其在板料冲压工艺中的应用，指出了模具设计应注意的问题。

At the same time,three dynamic models of cylinder powder green-preform are set up ,which are :die and corefixed on the die shoe , core moving with green-preform, core and die moving downwardin relation to green-preform. The theoretical equations of the green-preform densities andpressing stresses of the three pressing conditions are also derived.

同时建立了凹模与型芯固定在下模座、型芯随压坯一起运动和型芯与凹模相对于压坯向下运动等三种圆环形粉末压坯压制的力学模型，导出了这三种压制条件下的压坯密度与压制压力的理论公式；其结果能够指导粉末冶金模具设计，为发挥模具材料的潜力提供依据。

Finally, several sets of cast dies and molds, including V6 transfer mold emplyed by GM, shoe die and piston die used for Santana, have been casted by LS high precise die-making system. All of these dies only needed a little machinaity. The cost and manufacture period of cast dies are lower than those of traditional wrought dies.

最后，采用LS法精密模具制造技术，用铸铁和新开发的铸造模具钢MCH13钢浇铸了多副模具，如V6发动机曲轴模、鞋模、桑塔纳轿车用活塞模具等，这些模具仅需进行少量的机加工即可进行使用，其生产成本及制作周期大大低于同类传统方法制造的模具。

According to the requirement of die designing, the die parting face and the gutter is designed. By Boolean calculation, the blocker, finisher , cut-off die and stripper are generated.

根据锻模设计要求，设计了分模面、毛边槽，通过布尔运算，生成了预锻模、终锻模、切边模实体和卸料板。

Springback is considered in the design of the bending die , since there is a big bending radius .The third die is wedge clicker die .

第二副模具为弯曲模，由于有一个较大的弯曲半径，所以在设计中主要考虑回弹因素对成形精度的影响。

Die-cutting indentation Edition in creasing machine is growing at the same time also gone from rough hand-made wooden ?ú machine sector assembling wood balsaming die sector ?ú high-tech version of laser territories die Centre ?ú fiber ?ú steel template ?ú synthesizer sandwich steel template deelops.

模切压痕版在模切压痕工艺不停成长的同时也履历了从粗劣的手工界组拆木版→机界木胶合模切版→矮新技艺的激光器界版→纤维塑胶模切版→钢模版→分解式不一明治钢模版的成长历程。

In membership card making equipment, automatic platen development, and die-cutting phase of mould tools, die-cutting Treasury, multi-function CNC tooling machines and cutlasses machine, and so on have vendors are die cut production, which in our country have become large, medium volume business card printing and membership card making packaging products-cutting operation, and the mainstream devices boast co., Ltd. is the most representative and the company is to last 100 years of manufacturing experience, reliable product quality, high-quality after-sales a great number of customers.

在会员卡制作后设备中，全自动平压平模切机发展比较成熟，与模切机相配套使用的制模工具、模切制版机、多功能制模机和数控弯刀机等设备都有厂家在生产，这种模切方式已经在我国成为大、中批量制卡和会员卡制作包装产品模切工序的主流设备，其中博斯特有限公司最具代表性，该公司以近百年的生产经验、可靠的产品质量、优质的售后服务赢得了大批客户。

Obviously the thermal conditions of dies and die castings and the fluid flow of liquid metal have critical influence on the quality of casting product, the production rate and the die life. Hence, computer numerical simulation has become an efficient tool to analyze as well as to control the thermal and fluid flow fields in die casting process.

压铸过程的温度场和流场是影响压铸产品质量、生产率和模具寿命的重要因素，计算机数值模拟技术为压铸温度场和流场的研究提供了有效的手段，同时也为压铸工作者控制压铸温度场和流场提供了有力的工具。

The company has now advanced modern equipment finishing Die , And strong technical force of the pumping Reply Die, Die profiled forming a wealth of experience and unique views.

现公司拥有现代化先进的模具精加工设备，及雄厚的技术力量；对抽引件模具、异形成型件模具具有丰富的经验和独特的见解。

The third model is die combination widi concentrating-share model and discount model. Firsdy, we must concentrate state-owned share based on investing cost; secondly, we can evaluate die stock on full-flowing condition by discount model, dien we can get die reasonable price of state-owned share.

3折股贴现模型：该模型其实是折股模型与贴现现金流模型的组合，首先我们要将国有股按投资成本进行缩股，使之与流通股同股，进而实现全流通，然后用自由现金流模型计算全流通条件下股票的内在价值，最后再来推算国有股的价值。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。