（一）选用正确的加热装置 (1) use the right heating device 用火烧或火烤来除去固在螺杆上的塑料，是塑料加工单位最常见也是最有效的办法，但绝对不能使用乙炔焰来清洁螺杆。乙炔焰温度可达3000°C，用乙炔焰来清洁请洁螺杆将不仅会破坏螺杆的金属特性，同时还将显著影响螺杆的机械公差。如果乙炔焰在烘烤螺杆某部位时火焰变为持久的蓝色，那么意味着螺杆这一部位的金属结构发生了改变，这将导致该部位耐磨损性降低，甚至发生抗磨损层与基体金属剥离。另外采用乙炔焰局部加热也会造成螺杆一侧过热，从而导致螺杆弯曲。大多数螺杆采用4140.H.T.钢制造，公差十分紧密，一般在0.03mm以内。螺杆的平直度大多在0.01mm 以内，当螺杆经乙炔焰烘烤及冷却后，通常很难回到原始的平直度。正确有效办法：在螺杆使用后立即采用喷灯进行清洁。因为这时螺杆带有加工过程中的热，故螺杆的热量分布仍是均匀的。 Using fire or fire to remove plastic from the screw is the most common and most effective method for plastics processing units, but no acetylene flame can be used to clean the screw. Acetylene flame temperature up to 3000 ° C, using acetylene flame to clean, please clean the screw will not only damage the screw metal properties, at the same time will also significantly affect the mechanical tolerance screw. If acetylene flame in flame when baking a portion of the screw into lasting blue, so this area means that the screw of the metal structure changed, it would lead to the parts wear resistance is reduced, and even wear resistant layer and substrate metal strip. In addition, the heating of acetylene flame can also lead to overheating of the screw side, resulting in the bending of the screw. Most screws are made of 4140. H.T. steel, which is very tight, usually within 0.03 mm. The straightness of the screw is mostly within 0.01 mm. When the screw is roasted and cooled by acetylene flame, it is usually difficult to return to the original flatness. The correct and effective method: use the spray lamp to clean immediately after the screw is used. Because the screw has the heat in the process, the heat distribution of the screw is still uniform. （二）选用正确的清洁剂 (2) choose the correct cleaning agent 商品经济高度发达的今天，市场上不乏形形色色的螺杆清洁剂（螺杆清洁料），大多是价格不菲，使用效果好坏不一。是否使用商品化的清洁剂，根据不同的厂家及生产情况而定；塑料加工企业也可根据自己的生产情况，使用不同的树脂来做螺杆清洁料，可为单位省去一笔不小开支。 The commodity economy is highly developed today, the market is full of all kinds of screw cleaner (screw rod cleaning material), most is expensive, the use effect is mixed. Whether to use the commercialized detergent, according to different manufacturers and production conditions; Plastic processing enterprises can also use different resins to do screw cleaning materials according to their own production conditions, which can save a small amount of money for the unit.