坯料

Unburnt earthenware specific system is the first step : weight long-roll squeeze-end physical, ultimately semifinished materials processing into sugar.

具体的制坯工步是：拔长—滚挤—终锻等，最终将坯料加工成锻件。

Gear axle to the shape of the craft and die design process works is first semifinished materials to forging temperature after heating system unburnt earthenware into account the type described in a certain temperature conditions, the need to blank out preheat, heating, thermal insulation; Use Moduan processes.

齿轮轴的成形工艺及模具设计的工艺工程是，先把坯料加热到锻造温度后再放入到制坯型腔内，在一定温度条件下，需要对毛坯进行预热、加热、保温处理；采用模锻工艺。

Preparation of semisolid billets of AZ91D magnesium alloy and thixoforming by using self-made wavelike sloping plate setup were studied.

采用自制的波浪型倾斜板振动装置对AZ91D镁合金半固态坯料的制备及触变成形进行研究。

By using self-made wavelike sloping plate setup,preparing semisolid billets of AlSi6Mg2 alloy and thixoforming were studied.

采用自制的波浪型倾斜板技术装置，对制备半固态 AlSi6Mg2合金坯料及触变成形进行研究。

Deficiency which exists in view of the existing technique of production technology, in the technique of production, this article uses the extrution casting method manufacture copper alclad semifinished materials, finally uses the hot extrusion craft, this kind of technique of production enhances the product the uniformity, thickness plasticity, the union to be reliable obviously, has the productivity to be high, the material cost is low, the product conductivity is high, merits and so on electrochemistry stable property.

针对现有生产工艺技术中存在的不足之处，在生产工艺上，本文采用挤压铸造方法制作铜包铝坯料，最后采用热挤压工艺，这种生产工艺明显地提高产品的均匀性、厚度可塑性、结合可靠，具有生产率高，材料成本低、产品导电率高、电化学性能稳定等优点。然而，铜包铝母线槽排挤压技术的研究是真正意义上的以铝节铜，在节省铜资源的方面具有十分重要的意义。

When the pouring temperature is close to the liquidus temperature of AlSi7Mgalloy, the primary α-Alin the billets of AlSi7Mg alloy solidifies into spherical or nodular grainswhich are small and distributed homogeneously. In order to obtain non-dendritic semi-solidbillets,the appropriate pouring temperature is 615℃. The faster cooling rate,the melt flowing and largersolidification region induced by the near liquidus pouring temperature promotes theformation of spherical or nodular primary α-Al.

实验表明：当浇注温度接近液相线温度时，AlSi7Mg合金中的初生α-Al凝固成球状或粒状，晶粒细小，分布均匀；获得球状或粒状AlSi7Mg合金半固态坯料的最佳浇注温度为615℃；在接近液相线温度下浇注，较快的合金熔体冷却速度、浇注引起的合金熔体活动和大范围的同时凝固促使AlSi7Mg合金形成球状或粒状的初生α-Al组织。

South America floor blank: CABREUVA, IPE, JATOBA, CUMARU, PALO SANTO Green sandalwood

南美地板坯料：CABREUVA、IPE、JATOBA、CUMARU、PALO SANTO

An optimization model of electricity and heat efficiency about intermediate frequency coreless induction furnace in the nonmagnetic process is established by using some restriction parameters such as power supply frequency and the diameter of steel stab,and its optimization design is done based on particle swarm optimization algorithms.

以电源频率和坯料直径为约束参数，建立了无芯中频感应电炉无磁性期电热效率优化模型，采用粒子群优化算法对其进行了优化。

Results of the experiment show that, 1 proper semi-solid remelting temperatures of the alloy is in the range of 570℃-571℃; 2 in the condition of optimized reheating processing, the temperature deviation in a billet is O℃-1℃; 3 dendritical colonies of a phase in original billet changed into isolated grains with forms of nodules and granule, which may satisfy the need of semi-solid thixoforming forming in theory.

实验结果表明：1该合金合理的半固态二次重熔温度为570℃-571℃；2在优化的感应加热工艺条件下，半固态重熔坯料内部的温差在0℃-1℃；3半固态重熔过程使原始料坯中的α枝晶组织变成球团状和节杆状组织，满足了半固态触变成型的要求。

Resultingly limitation of equipment, it is difficult to densify the spray deposited preforms with large dimension by extrusion.

而采用挤压等工艺，由于受到设备的限制，无法实现大尺寸坯料的变形。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。