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Often known as “impression die forging”, closed die forging involves two or more dies containing impressions brought together. This simple process displays great versatility. Manufacturers can create a nearly limitless array of shapes and complex metal parts in this way.

Closed die forging under controlled conditions permits the creation of forgings of all sizes within relatively tight tolerances. However, manufacturers usually employ this process to produce small, intricately shaped and patterned components in high volumes.

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CREATING CUSTOM CLOSED DIE FORGINGS

The process of custom closed die forgings utilizes two or more metal dies. During this forging process, the manufacturer to some extent reproduces and automates the action of a blacksmith striking hot metal on an anvil to change the shape of a metal part.

锻造过程

在机器的协助下，制造商对上部模具进行了编程，以击中放置在下部模具上的加热金属方块。此过程可能依赖各种不同的锻造方法。

CLOSED DIE FORGING IN DETAIL

封闭的锻造机依赖于两个润滑的两个工具模具：一个移动的下部模具（或“ Anvil Die”）和一个移动的上部模具（或“ Hammer Die”）。每个模具都由坚固，耐用的材料组成，例如高级钢合金。该模具包含最终部分形状的部分负面印象。

制造商将加热的金属放在润滑良好的底部模具上。加热过程会导致金属表面变得可延展。（此步骤需要使用足够数量的材料来再现最后一部分。）两个模具然后彼此相互移动，每个模具在压缩过程中都会塑造金属。

模具将全部或部分覆盖整个金属。死亡可以迅速生成特定部分的副本，从而在相当高的准确度中可靠地重现形状和构象。

沿着装配线进行

During the compression process, a small quantity of molten metal may flow along recesses on the edges of both dies called a “flash gutter”. This plug cools quickly. Efforts to eliminate flash completely resulted in the development of “true closed die forging” techniques using completely closed die cavities.

制造商通常会通过一系列自动封闭的锻造工作站在装配线上运行加热金属，以便首先塑造零件，然后将其他细节印象深刻。例如，该零件可能会从最终的整理器腔中出现，例如，在表面上显示细节。

FORGING TEMPERATURE VARIATIONS

如今，制造商经常使用复杂的温度控制来影响金属组件的创建。例如，为了产生自定义的模拟，显示客户所需的属性，制造商可以操纵原材料的温度：

HOT FORGING

To perform hot forging, a manufacturer heats metal into a molten state. The material will then undergo reshaping and forming in the casting and forging processes.

COLD FORGING

制造商在室温下在未加热的金属上进行锻造，并使用强烈的高压在原材料中形成所需的形状或印象。例如，这种伪造的方法有时允许重塑铝。

WARM FORGING

制造商在锻造之前加热金属，但不会导致原材料失去其结构完整性。由于这种类型的锻造，金属不会重结晶，但它会采用不同的形状。

打开锻造

Manufacturers sometimes distinguish the closed die forging process from another popular types of forging, open die forging. That process moves hot metal through workstations in which a die will only come into contact with a part of the workpiece at any given time.

封闭锻造的优势

从制造的角度来看，封闭的锻造过程比许多形式的铸造或开放式锻造具有一些不同的优势。

• Closed die forging usually supplies a more cost-effective process than open-die forging for the fulfillment of high volume production runs. This process can generate many small parts quickly.
• 该过程将有助于使用几乎任何类型的商业金属创建形状。例如，如今，制造商依靠封闭的锻造来创建由钢，铝或黄铜合金制成的零件。
• 自定义封闭的锻造通常比许多其他锻造或铸造过程提供更好的表面饰面。通过此过程产生的零件可能只需要最少的饰面。
• A manufacturer can utilize the process of closed die forging to produce both symmetrical and non-symmetrical metal parts. With the capability to reproduce almost any size and shape of part, this flexible forging process holds widespread appeal in modern manufacturing environments!
• 与大多数形式的锻造相比，封闭的锻造过程有时会提供一种创建金属零件的方法，以显示出优质的机械性能。在严格控制的制造条件下，金属组件的内部晶粒结构有助于提高强度和紧密度。
• Manufacturers may prefer closed die forging because parts do not require extensive machining afterwards. The manufacturer will need to trim away any flash. Yet the process of custom die forging may allow the generation of blind cores or nearly complete shapes requiring only the most minimal machining and finishing.
• 封闭的锻造制造环境具有一些实际的每日维护优势。与铸造制造地点的需求相比，保持整洁，干净的工作区域通常需要更复杂的清洁程序。

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