冷隔

并由此引伸对克服薄壳灰铸铁件冷隔、裂纹缺陷的讨论。

Furthermore , they deal with the methods to eliminate such defects as Cold Shuts and Cracks in thin-shell grey-iron castings .

薄壳灰铸铁件冷隔、裂纹的特性及生产对策

On the Characteristics Technological Measures of Cold Shuts and Cracks in Shaping Thin-Shell Grey-Iron Castings

采用半固态挤压铸造工艺对B级钢轴箱体进行了成形研究，获得了形状完整、轮廓清晰的铸件，但铸件表面有明显的裂纹和冷隔等缺陷。

The study on the forming of axle box body of B grade steel was conducted by semi_solid squeeze casting . The cast with complete shape and clear contour was obtained . But some apparent defects e.g. crack and cold laps were found on the surfaces of the cast .

铸锭的铸造质量对合金的使用性能有重大影响，Cu-Cr-Zr合金常见的铸造缺陷包括缩孔、气孔、裂纹、偏析、冷隔和铜豆等。

Ingot quality influences the property of alloys significantly . The common defects in cast ingots are shrinkage cavity , gas hole , crack , segregation , cold lap and copper sweat during the Cu-Cr-Zr vacuum melting and casting .

采用铸筋、控制模温等措施可消除铝涡壳铸件的冷隔、缩松缺陷。

The defects can be avoided by the use of casting rib and control of the mold temperature .

加压后提高了铝液充型能力，有利于消除铸件表面的颗粒状和冷隔；

The results showed the applied pressure is beneficial to eliminate grainy surface and cold shut because of improving filling ability .

分析了实际铸造比压偏小以及不能瞬间及时增压是造成摩托车车轮挤压铸件表面起泡和冷隔的主要原因。

The lower specific pressure and delay pressurization in time during casting process were responsible for surface blister and cold shut of motor cycle wheel in squeezing casting .

模拟结果表明，该浇注系统填充过程平稳，温度场分布均匀，所得压铸件气体夹杂和冷隔缺陷少，整体质量较高。

Simulated results show that obtained parts has few defects , such as inclusion and cold shut due to smooth mold filling and uniform distribution of temperature field .

实验分析发现焊缝根部容易出现未焊透、钉尖、冷隔等缺陷。

Because of the bad protection the main weld defects that may emerge in the weld are incomplete penetration , nail-shaped flaws , cold laps and so on .

通过对流动场温度场的耦合计算，揭示了铸件产生冷隔浇不足、材质等缺陷的部位与形成原因。

By coupling simulation of fluid field and temperature field , the location and cause of the defects such as misrun , cold shut , material property are exposed .

采用金属型立式浇铸，严格控制铸造工艺参数（模具温度、浇注温度、浇注速度），以避免气孔、缩松、冷隔等缺陷的产生。

By using metal mold casting , we can control mold temperature , infusing temperature , infusing speed to avoid defects of pore , cold partition , shrink and loose .

以解决缝纫机车壳铸件的冷隔、裂纹缺陷的工作体会为例，较为详细地阐述其缺陷的特性及生产对策。

The authors detail the characteristics and technological measures of these defects , by discussing their successful solution to these problems appeared in the housing casting of the sewing machines .

然后根据限制铸拉速度的主要缺陷，即凝固壳断裂和冷隔，通过计算铸件截面承受的摩擦力、热应力和液穴形状，得到了铸拉工艺的极限速度，计算值与实测值吻合。

Then , the limit speeds of cast drawing were calculated according to the main technical defects , i.e. the cold shut and the solid break , the calculation value corresponded with the measured results .

浇注时模温要控制在450℃左右，模具温度太低铸件容易出现冷隔和裂纹等缺陷；

The mould temperature should be controlled about at 450 ℃, and when the temperature of the mould is too low , the casting is apt to present the deficiency of cold shut and crack .

提出了解决生产中易出现冷隔的顶部面积突然扩大的薄壁盖体类铸件的二种工艺途径。

In addition , two processes are introduced to solve the problem occurring in production , of a sudden enlargement upon the top area of a cold lap in castings with a thin wall cover .

增加电极数量或使电极与结晶器产生相对运动可避免双金属的U型界面、浇不足及冷隔等缺陷的产生。

The U-shape interface and the casting defects such as misrun and cold lap can be avoided by the increase and scatter arrange of consumable electrodes or the relative moving between electrodes and a crystallizer .

采取双浇道浇注系统设计，边冒口补缩，高温浇注，有利于快速充型，防止冷隔、夹砂、夹渣和其它铸造缺陷，提高铸件的成品率。

According to double cast systems designing , side-riser compensating shrink and casting in high temperature , it is good for filling mould , avoiding cold partition and other flaw , improving finished product rate of castings .

冷矿筛用新颖隔振器&复合弹簧的研制

Development of composite spring , novel damper for cold ore screen