泊头市卓远机械设备制造有限公司

球墨铸件的增碳缺陷知识

最近小编有点忙，所以忽略了与大家分享的时间，今天小编给大家带来的是关于球墨铸件的部分知识，请看下面介绍。

在球墨铸件的铸造的过程中，很容易的产生增碳缺陷，但是就现在国内的球墨铸件的铸造水平很难的完全消失这种情况。这个问题也是很多球墨铸件生产企业不敢扩大自己生产规模的一个重要的原因。

增碳缺陷产生的原因主要是泡沫材料含有碳，浇注时泡沫燃烧分解出游离碳，碳侵入钢水所致。经过试验，发现其增碳有一定的规律性，即铸件表面增碳，而心部几乎不增碳；内浇口附近不增碳，而离内浇口越远，增碳越严重。

采取如下相应措施，可使铸件成分基本在工艺要求范围内。利用离内浇口越远，增碳越严重的特点，在离内浇口最远端或在铸件的最高点设置冒口，使先进入铸件的增碳污染严重的钢水进人冒口内，同时冒口还起到集渣、集气的作用。

使用该工艺，可使铸件整体含碳量控制在工艺要求范围内。球墨铸件的密度非常重要，只要表面光洁，密度低，可带来增碳低和发气量少的好处。

Knowledge of carbonization defects in nodular castings

Recently, Xiaobian is a bit busy, so I have neglected the time shared with you. Today, Xiaobian brings you some knowledge about the spheroidal castings. Please see below.

In the casting process of spheroidal graphite castings, carbonation defects are easily generated, but the casting level of domestic spheroidal graphite castings is hard to completely disappear. This problem is also an important reason why many spheroidal graphite casting manufacturers dare not expand their production scale.

The reason for the carbon-increasing defects is mainly that the foam contains carbon, and the foam burns to decompose free carbon during pouring, and the carbon invades the molten steel. After testing, it is found that there is a certain regularity in carbon addition, that is, the surface of the casting is carbonized, and the core is hardly carbon-increasing; the carbon is not added near the ingate, and the farther away from the inner gate, the more serious the carbon is added.

Take the following corresponding measures, the casting composition can be basically within the scope of the process requirements. The farther away from the inner gate, the more serious the carbon increase is, the riser is set at the farthest point from the inner gate or at the highest point of the casting, so that the molten steel with serious carbonization pollution entering the casting first enters the riser, The riser also plays the role of collecting slag and collecting gas.

Using this process, the overall carbon content of the casting can be controlled within the process requirements. The density of spheroidal graphite castings is very important, as long as the surface is smooth and low in density, it can bring the benefits of low carbon addition and low gas generation.

Company name: botou zhuoyuan mechanical equipment manufacturing co.,LTD
Registered address: jiaohe development zone, botou city, hebei province
Fax number: 0317-8031093
Contact information: 15369812793 (WeChat with the same number)  liansheng chu
Postcode: 062151
Enterprise email:1358827475@qq.com
Account Opening Bank: Botou Branch of Bank of China
Account number: 100399943203
Agricultural bank account number: 6228481739059615270