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型圈了(也有0令的说法) ，它具有减震，密封、耐磨的基本特性，根据材料不同，也可具有耐油、耐化学等特性，常应用在挖掘机、汽车、仪器仪表，工程机械等领域， Among all silicone rubber products, in addition to tires, the most common is O -rings ( also known as 0 -ring ) , which has the basic characteristics of shock absorption, sealing, and abrasion resistance. Depending on the material, it can also have oil resistance and resistance to oil. Chemical and other properties are often used in the fields of excavators, automobiles, instruments, engineering machinery, etc.
飞边) ，因为只有零毛边才能保证O型圈的密封性，今天我们要聊的是就是毛边是如何产生的，以及如何做到零毛边 O 型圈 The most basic requirement for measuring the quality of the seal ring is: whether there is burr ( flash ) , because only zero burr can ensure the tightness of the O -ring. Today we are going to talk about how the burr is generated and how to do it. Zero-edged O -ring
The occurrence of burrs often occurs when the mold is vulcanized. At this time, the rubber material will fill the cavity of the entire mold, and because the rubber material to be filled has a sufficient amount, the excess rubber material will then flow out along the parting surface. The edges that result in different thicknesses for the inner and outer diameters are called burrs.
There are two common trimming methods: manual trimming and mechanical trimming.
、手工修边 1. Manual trimming
O 型圈的加工 This method is the most primitive and traditional, that is, the manual use of a tool to remove the burrs on the inner and outer edges of the ring. The quality of this trimming method depends on the experience of the worker, is inefficient, and has a high scrap rate, so it is only suitable for small batches. Processing of edging O -rings
、机械修边有两种：砂轮磨边、低温冷冻去边 2 , there are two types of mechanical trimming: grinding wheel grinding, low temperature freezing
型圈套在与其内径大小一样的砂棒或尼龙棒上，使用电机带动其高速转动，再通过砂纸或砂轮摩擦O型圈的外圆，以达到修边，但精度不高，磨削表面粗糙是这种修边方式的缺点 Compared with manual trimming, the grinding of sandpaper and sandpaper has a corresponding increase in efficiency and quality. The specific method is to wrap the vulcanized O -ring on a sand rod or nylon rod with the same inner diameter and use a motor to drive it. Rotate at a high speed, and then rub the outer circle of the O -ring with sandpaper or wheels to achieve trimming, but the accuracy is not high, and the roughened surface is the disadvantage of this trimming method.
O 型圈 ， The other is low-temperature freezing edge removal. This method originates from Japan and is also a kind of mechanical trimming. The difference is that it works in a freezing environment. It can be used: vibration, swing or shake, drum, brushing and shot blasting. , Five different forms to achieve zero-edged O -rings ,
型圈薄薄的毛边因冷冻由弹性态变为玻璃态(变硬变脆) ，但产品本身仍有一定弹性，然后随着振动的运转(或其他五种形式) ，产品与产品之间发生碰撞，产品与磨蚀剂产生磨蚀、产品与抛丸产生冲击，这时薄薄的毛边就会被打碎，然后脱落，最后也就达到了修边的目的，而产品之后会在常温下恢复其原有性能， 这种方式生产效率高，但是对内圈的去边效果较差。 The specific principle is that in a low-temperature freezing environment, the thin burr of the O -ring changes from an elastic state to a glass state ( hardened and brittle ) due to freezing, but the product itself still has a certain elasticity, and then with the vibration of the operation ( or other (Five forms ) , the collision between the product and the product, the product and the abrasive abrasion, the product and the shot blast impact, at this time the thin burr will be broken, and then fall off, and finally reached the trimming Purpose, and the product will then restore its original performance at room temperature. This method has high production efficiency, but the effect of removing the inner ring is poor.
的知识暂时就分享到这里，厂家要根据自己的实际情况，合理的选择一种或多种修边方式。 Well, the knowledge about zero-edged O-rings will be shared here for the time being. Manufacturers should reasonably choose one or more trimming methods according to their actual conditions.
硅橡胶制品 25年，提供从材料研发，模具开发，到硅橡胶产品制造的整体解决方案，欢迎来厂参观考察。 Yongyong Silicon Rubber has been focusing on silicone rubber products for 25 years. It provides overall solutions from material research and development, mold development, and manufacturing of silicone rubber products. Welcome to visit our factory. Website: xtvee.com
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