冷铁 chill(中英文对照)

冷铁

英文名称：chill

1、简介

产品名称：冷铁

制造工艺：冲压，成形，锻造，车削，铸造或焊接

其它名称：内外冷铁，插片冷铁，冷却钉，螺旋状内冷铁，马蹄钉和铸造钉

冷铁由镀锡或涂敷防粘膜稀浆的低碳钢或线材加工而成，并且可以加工成各式各样的形状和尺寸。无论是马蹄钉还是直杆钉都可以作为冷铁使用。在铸造生产中，冷铁被用来控制收缩和获得定向凝固。外冷铁放在模子中顶着铸件壁。内冷铁被压进型芯，或模壁，这样它们的一大部分就可以伸进模穴，从而达到预期的效果。

1, Introduction

Product Name: cold iron

Manufacturing process: stamping, forming, forging, machining, casting or welding

Other names: internal and external iron chill, insert the cold iron nail, cooling, helical internal chill casting, horseshoe nails and nail

Cold iron tin or coated by anti mucosal slurry of low carbon steel or wire processing, and can be processed into every kind of shape and size. Both nail or nail straight rod can be used as cold iron. In foundry production, cold iron is used to control the shrinkage and directional solidification. Cold iron on the top wall of mold casting. The cold iron is pressed into the core, or die wall, so one of their most can into the mold cavity, so as to achieve the desired effect.

2分类

为增加铸件局部冷却速度，在型腔内部及工作表面安放的金属块称为冷铁。冷铁分为内冷铁和外冷铁两大类。放置在型腔内能与铸件熔合为一体的金属激冷块叫内冷铁。造型（芯）时放在模样（芯盒）表面上的金属块叫外冷铁。

2 Classification

In order to increase the cooling rate of castings in local, metal block cavity placed inside and the working surface is called cold iron. Cold iron is divided into internal chill and cold iron two categories. Metal induced is placed in the cavity and casting fusion as one of the cold block called the cold iron. Other (core) on appearance (box) the piece of metal called cold iron on the surface.

作用：

石墨冷铁

铸造生产中，冷铁对提高冒口的作用和防止铸件产生缩孔、缩松，保证铸件质量起着较为重要的作用，在消失模铸造中完全可以和普通铸造法一样地使用冷铁。外冷铁可在舂砂时放入；内冷铁可在制模时嵌入或粘合在模型地内部，也可将外冷铁延伸到型外，固定在砂型中。内外冷铁安放原则与冷铁种类、规格与普通铸造相似。

Effect:

Graphite chills

Casting production, to improve the cold iron riser and prevent casting shrinkage hole, shrinkage porosity, ensure casting quality plays a more important role, in lost foam casting can be completely and common casting method using cold iron. External cooling in sand water could add; inner cooling could embedded or bonding within the model in modeling, can also be extended to the outside cold iron, fixed in the sand. Internal and external iron chill placed principle and cold iron species, specifications and common casting similar.

一在冒口难于补缩的部位防止缩孔缩松。

二防止壁厚交叉部位及急剧变化部位产生裂纹。

三与冒口配合使用，能加强铸件的顺序凝固条件，扩大冒口补缩距离或范围，减少冒口数目或体积。

四用冷铁加速个别热节的冷却，使整个铸件接近于同时凝固，既可防止或减轻铸件变形，又可提高工艺出品率。

五改善铸件局部的金相组织和力学性能。如细化基体组织，提高铸件表面硬度和耐磨性。

六减轻和防止厚壁铸件中的偏析。

冷铁的作用是加速铸铁件某部分在浇注过程中的冷却速度的。铸铁件因为其结构的需要造成各个部分壁厚不均，有的部位很厚，在冷却的过程中就冷却的慢，壁厚薄的部位就冷却的快，使得同一个铸件各个部位冷却速度不均。造成的结果有可能产生缩孔、或者把壁薄的部位拉裂。为了避免这种现象的产生，造型完成后，就在壁厚厚的部位加放冷铁，用它来吸收铁水的温度，加速这个部位的冷却速度，缩短和其他壁厚薄的部位冷却的时间差。

1. in the riser feeding position to prevent shrinkage.

2. prevention and rapid change cross site wall thickness parts crack.

3. and the riser with the use, can strengthen the solidification condition order, expand the feeding distance

or range, reduce the number or size of riser.

4. cold iron accelerated individual hot spot cooling, the casting near simultaneous solidification, which can

prevent or reduce casting deformation, and can improve the process yield.

5. The microstructure and mechanical properties of local area of the casting is improved. Such as refining

matrix organization, improve casting surface hardness and wear resistance.

6. reduce and prevent the segregation of thick walled castings.

The chill effect is accelerated iron parts in the casting process of the cooling rate. Cast iron because of the need of its structure caused by uneven wall thickness of each part, some area is very thick, then cooled in the cooling process of slow, wall thickness of the part cooling fast, makes the same casting parts of uneven cooling