Do you know ? How to choose the mold parts(mold components)?

How To Choose The Mold Parts/ Components ?

      We all know that the service life of mold parts(mold components) has a great impact on the use of mold. If the service life of mold parts is short, problems often occur.

This will definitely affect the normal use of the mold and the normal production schedule, so it is very important to understand some basic knowledge (performance) of the mold parts.

1.Abrasive Property

When the mold working , semifinished product and the surface of the mold cavity will produce intense friction,which leads to the failure of the mold parts .

Therefore, the abrasive property of materials is one of the most basic and important properties.

In general, the higher hardness of the mold parts,the better abrasive property, and the longer the service life. 

Therefore, the hardness  is the main factor affecting the life of mold parts(mold components).

2. Strength and Toughness 

The working conditions of molds are mostly very bad, and some often bear large impact loads, which lead to brittle fracture.

In order to prevent the sudden brittle break of the mold parts when working, the mold parts should have high strength and toughness. 

The toughness of mold parts mainly depends on the type of carbide, the proportion of carbon and the grain size and microstructure of the material.

3, Anti Fatigue Fracture Property

In the process of working mold parts(mold components), fatigue fracture is often caused by the long-term action of cyclic stress.

The form of the fracture is small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture

And bending fatigue fracture. The fatigue fracture properties of mold parts mainly depend on their strength, toughness,

Hardness, and the content of inclusions in the material.

4. Anti High Temperature Property

When the working temperature of the mold is higher, the hardness and strength will decrease, leading to the early die of mold parts(mold components) . 

Therefore, the mold material should have a high resistance to return Fire stability, 

to ensure that the mold parts in higher working temperature, with higher hardness and strength.

5. Anti Corrosion Property

Some molds such as plastic molds in the work, due to the presence of chlorine, fluorine and other elements in the plastic, 

After heat decomposition, strong erosive gases such as HCI and HF are precipitated, which erode the surface of the mold parts and add

larger surface roughness aggravates wear failure. Therefore, mold fittings(mold components) need anti corrosion property.

Above, we understand the properties  requirements of mold parts(mold components) in the use process,

In view of the above points, the following preventive measures are proposed:

1. Raw materials should be strictly selected to ensure real materials;

2. The heat treatment hardness of materials must meet the requirements;

3. High purity, less impurities, uniform chemical composition and fine grain should be selected.Mold steel with small carbide, good performance and high fatigue strength;

4. The surface of mold parts(mold components) can be strengthened, such as nitriding treatment, coating treatment (TiCN titanium plating, DLC coating, etc.) to improve the fatigue strength of the surface of mold parts(mold components);

4. Improve the machining accuracy and surface finish of mold parts (mold components)when processing mold parts;

If you have arequirement of  mold parts(mold components). please remember to contact the salesman of hanzhun mold company, 

They  are wholeheartedly to serve you and  provide high quality & best  price products.

Service hotline(WhatsAPP): +86 13790103389 Manager Hu

我们都知道模具配件的使用寿命对模具的使用有很大的影响，如果模具配件使用寿命短，经常性的出现问题

这肯定影响到模具的正常使用，影响到正常的生产进度，因此了解模具配件的一些基本知识（性能）非常重要。

1.耐磨性坯料在模具型腔中塑性变性时，沿型腔表面既流动又滑动，使型腔表面与坯料间产生剧烈的摩擦，从而导致模具配件因磨损而失效。

所以材料的耐磨性是最基本、最重要的性能之一。

一般情况下，模具配件的硬度越高，磨损量越小，耐磨性也越好，使用寿命就会长。因此模具配件的硬度是影响模具配件的寿命的主要因素。

2.强韧性

模具的工作条件大多十分恶劣，有些常承受较大的冲击负荷，从而导致脆性断裂。

为防止模具配件在工作时突然脆断，模具配件要具有较高的强度和韧性。 模具配件的韧性主要取决于材料的碳化物种类，含碳比例和晶粒度和组织状态。

3、抗疲劳断裂性能

模具配件工作过程中，在循环应力的长期作用下，往往导致疲劳断裂。

其形式有小能量多次冲击疲劳断裂、拉伸疲劳断裂接触疲劳断裂

及弯曲疲劳断裂。模具配件的疲劳断裂性能主要取决于其强度、韧性、

硬度、以及材料中夹杂物的含量。

4.耐高温性能

当模具的工作温度较高时，会使硬度和强度下降，导致模具早期

磨损或产生塑性变形而失效。因此，模具材料应具有较高的抗回

火稳定性，以保证模具配件在较高的工作温度下，具有较高的硬度和强度。

5.耐蚀性

有些模具如塑料模在工作时，由于塑料中存在氯、氟等元素，受

热后分解析出 HCI、HF等强侵蚀性气体，侵蚀模具配件表面，加

大其表面粗糙度，加剧磨损失效。因此，模具配件需要耐腐蚀性。

以上，我们了解到在使用过程中对模具配件的性能要求，

鉴于以上几点，提出的以下预防措施：

1.应当严格选择原材料，确保真材实料；

2.相关材料热处理硬度一定要达到要求；

3.应当选用纯度高、杂质少、化学成分均匀、晶粒细．碳化物小、等各项性能好，疲劳强度高等特点的钢材；

4.可以对模具零件表面做强化处理，比如氮化处理，涂层处理（TiCN镀钛，DLC涂层等）从而提高模具配件表面抗疲劳强度；

4.在加工模具配件的时候，提高模具配件加工精度和表面光洁度；

如果您有模具配件需求，请记得联系涵准模具配件业务员，我们全心全意为您服务，为您提供质优价美的产品。

服务热线：+86  13790103389  胡经理