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為什麼彩彈射擊桶需要光潔度?Why Paintball Barrels Need Smooth Finish

為什麼彩彈射擊桶需要光潔度呢?這是一個很好的問題!

鏡面處理是指金屬表面可以清晰地反射圖像。
這是機械切割過程後非常好的粗糙度的理想代名詞。
這也是提高機械部件服務的最有效狀態。
粗糙度是指機械加工表面的質量,是指機械加工後加工表面的微觀不平度。
它由RA\RZ\RY這三個代碼和一個數字來標記。
當工件的表面粗糙度RA<0.8um時,稱為鏡面光潔度。
表面質量直接影響加工件的物理、化學和機械性能。
產品的工作性能、可靠性和壽命在很大程度上取決於元器件的表面質量。
也就是說,重要零件的表面質量要求遠高於普通零件。
這是因為表面質量好的零件會顯著提高零件的耐磨性、耐腐蝕性和疲勞性。

 

無論進行何種加工,零件表面都會留下略微凹凸不平的刀痕。
並可見峰谷交錯起伏現象。可以目測到處理後的表面。
凹凸不平的痕跡可以在放大鏡或顯微鏡下觀察。
這是製造加工後的表面粗糙度,稱為表面光潔度。
國家規定的表面粗糙度參數由高度參數、間距參數和綜合參數組成。

對鏡面進行機械加工的方法有:去除材料法、非切削法(滾壓加工)。
去除材料的加工方法有:研磨、研磨、拋光、電火花等。
非切削工序為:軋製(使用鏡面工具)、擠壓。

零件圖除了圖形和尺寸外,還必須有製造零件應滿足的一些質量要求,一般稱為技術要求。
技術要求的內容通常為:表面粗糙度、尺寸公差、形位公差、材料及熱處理、表面處理等。
波紋管是表面粗糙度和方法。

加工方法:
表面特徵/粗糙度(RA)值/加工方式
可見的機器標記/Ra100、Ra50、Ra25/粗銑/車削、鑽孔
輕微可見的機械標記 / Ra12,5, Ra6,3, Ra3,2/精車、磨削、鉸孔
無機痕鏡面/Ra1,6,Ra0,8,Ra0,4/珩磨、拋光、超精加工
深光面/Ra0.2、Ra 0.1、Ra0,05/珩磨、拋光、超精加工

如何選擇彩彈槍管的表面粗糙度
表面粗糙度參數值的選取,既要滿足零件的功能要求,又要考慮經濟合理性。
選中後,可以參考已有部分確定模擬方式。
在滿足零件功能要求的前提下,應選擇較大的表面粗糙度參數值,以降低加工成本。
一般來說,零件的工作面,配合面,密封面,運動速度高,
和單位壓力的摩擦表面高等,表面高且光滑,參數值應較小。
非工作面、非配合面、尺寸精度低,
參數值應為參數RA值與處理方法及其應用實例的關係,可供參考。
彩彈槍管或嵌件的內孔要求,基於以上原因,我們建議內孔Ra 0.4或更小,而外孔可以Ra 0.8或更小。

本文章專業內容來至:https://milling-machining.com

 

Mirror Finish means the surface of the metal can clearly reflect the image.

This is an ideal synonymous with a very good roughness after the mechanical cutting process. It is also the most effective state to improve the service of the mechanical components.

Roughness means the quality of the surface of the mechanical processing refers to the microscopic unevenness of the processing surface after the mechanical processing. It is marked by the three codes of RA \ RZ \ RY and a number.

When the surface roughness of the workpiece is RA <0.8um, it is called the mirror surface finish. The surface quality directly affects the physical, chemical and mechanical properties of the processed parts.

The work performance, reliability, and life of the product depends on a large extent on the surface quality of the components. In other words, the surface quality requirements of important parts are much higher than ordinary parts. This is because the surface quality parts will significantly improve parts’ abrasion resistance, corrosion resistance and fatigue.

 

No matter what kind of processing is processed, a slightly uneven knife marks will be left on the surface of the parts. And the peak and valley phenomenon of staggered undulating can be seen. The surface after processing can be seen visually. The uneven marks can be observed under magnifying glass or microscope.

This is the surface roughness after manufacturing processing, which was called surface smoothness. The national stipulated parameters of the surface roughness consisting of height parameters, spacing parameters and comprehensive parameters.

 

The mechanical processing methods obtained to the mirror surface are: removing material methods, non -cutting methods (rolling processing).

The processing methods of removing materials are: grinding, grinding, polishing, and electric sparks.

The non -cutting process is: rolling (using mirror tools), squeezing.

 

In addition to the graphics and size, the parts map must also have some quality requirements that the manufacturing parts should meet, which are generally called technical requirements. The content of the technical requirements is usually: surface roughness, size tolerance, shape and position tolerance, material and heat treatment, surface treatment, etc. Bellows are the surface roughness and the methods.

 

Machining methods:

Surface feature / roughness (RA) value / processing methods

Visible Machine Marks / Ra100, Ra50, Ra25/ coarse milling/ turning, drilling holes

Machine Marks slightly seen / Ra12,5, Ra6,3, Ra3,2/fine turning, grinding, reaming

Mirror without machine mark/ Ra1,6, Ra0,8, Ra0,4/ honing, polishing, superfinishing

Dark glossy surface/ Ra0.2, Ra 0.1, Ra0,05/ honing, polishing, superfinishing

 

How to Select Surface Roughness for Paintball Barrels

The selection of surface roughness parameter values should not only meet the functional requirements of the parts, but also consider economic rationalities. When selected, you can refer to the existing part to determine the analog method. Under the premise of meeting the functional requirements of the parts, the larger surface roughness parameter value should be selected to reduce the processing cost. Generally speaking, the working surface of the parts, the surface of the coordination, the surface of the seal, the high movement speed, and the friction surface of the unit pressure are high, etc., the surface is high and smooth, and the parameter value should be smaller. Non -working surfaces, non-cooperative surface, and low -dimensional accuracy, the parameter value should be the relationship between the parameter RA value and the processing method and its application instance, which can be used for reference.

The demand of inner bore of a paintball barrel or an insert, from the above reason, we recommend the inner bore to be Ra 0.4 or less, while the outer bore can be Ra 0.8 or less.

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