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　　水表是一種普遍使用的計量設備，用于監(jiān)測自來水、污水、工業(yè)廢水、汽車冷卻水等管道輸送中的流量。水表外殼是水表的主要結構部件，可以把水表分為兩大類：一類是全封閉式水表，其外殼中有密封膠密封，不會引起水霧腐蝕，而結構簡單，成本較低，適用于普通自來水管道監(jiān)測；另一類是半封閉式水表，其外殼需要配合工業(yè)氣體進行加壓封閉，適用于監(jiān)測含有顆粒、水霧、有害氣體的工業(yè)廢水、污水、汽車冷卻水等管道。

　　無論是全封閉式水表還是半封閉式水表的外殼，其材料都可以根據(jù)水質的不同而選擇，一般來說，如果水質較差，外殼材料應該選擇鋼板，如果水質較好，外殼材料應該選擇不銹鋼。半封閉式水表外殼的典型材料是鋼板加工成的，而其制造工藝也比較簡單。但是半封閉式水表外殼需要進行壓力封閉，否則水霧和氣體會導致內部部件的腐蝕，使水表的使用壽命大大縮短。

　　對于水表外殼加工工藝，根據(jù)水表的不同類型和使用要求，可以采用不同的工藝方法，進行水表外殼的加工。如果要制造一個全封閉式水表外殼，可以采用鈑金加工、沖壓加工等方法；如果要制造一個半封閉式水表外殼，可以采用鍛造或鍛壓加工方法；如果要制造一個普通水表外殼，則可以采用注塑或鑄造加工方法。

　　目前市場上使用最廣泛的水表外殼加工方法是鈑金加工。鈑金加工又稱為沖壓加工，是一種采用沖床或其他機床將工件的表面壓到所需形狀的加工方法。鈑金加工相對于其他加工方法來說，具有成本低、速度快、工藝簡單的優(yōu)點。一般來說，采用鈑金加工制造水表外殼的成本大約是其他加工方法的一半。因此，鈑金加工是制造水表外殼的首選方法。

　　中國現(xiàn)在發(fā)展迅速，水表制造業(yè)也在不斷發(fā)展壯大，水表廠家想要在市場上占據(jù)一席之地，就必須不斷提高產(chǎn)品質量，提高水表外殼加工水平。

　　Water meters are a commonly used measuring device to monitor the flow of water, wastewater, industrial wastewater, automotive cooling water and other pipeline transmission. The water meter shell is the main structural component of the water meter, which can be divided into two categories: one is the fully sealed water meter, which has sealing glue sealing in the shell, will not cause water mist corrosion, and the structure is simple, the cost is low, suitable for ordinary water pipeline monitoring; The other is a semi-closed water meter, which requires pressure sealing with industrial gas in the shell, and is suitable for monitoring industrial wastewater, sewage, automotive cooling water and other pipelines with particles, water mist, harmful gases.

　　Whether it is a fully sealed water meter or a semi-closed water meter, the material of the shell can be selected according to the different water quality. Generally speaking, if the water quality is poor, the shell material should be steel plate, and if the water quality is good, the shell material should be stainless steel. The typical material of the semi-closed water meter shell is processed by steel plate, and the manufacturing process is also relatively simple. However, the semi-closed water meter shell needs to be sealed under pressure, otherwise the water mist and gas will cause corrosion of the internal components and greatly shorten the service life of the water meter.

　　For water meter shell processing technology, according to the different types of water meters and use requirements, different processing methods can be used for water meter shell processing. If you want to manufacture a fully sealed water meter shell, you can use sheet metal processing, stamping processing, etc.; if you want to manufacture a semi-closed water meter shell, you can use forging or forging processing; if you want to manufacture an ordinary water meter shell, you can use injection molding or casting processing.

　　The most widely used processing method for water meter housings on the market is sheet metal processing. Sheet metal processing is also called stamping processing, which is a processing method that uses press or other machine tools to press the surface of the workpiece into the required shape. Sheet metal processing has the advantages of low cost, fast speed and simple process compared with other processing methods. Generally speaking, the cost of manufacturing water meter housings by sheet metal processing is about half of that of other processing methods. Therefore, sheet metal processing is the first choice for manufacturing water meter housings.

　　Now China is developing rapidly, the water meter manufacturing industry is also growing rapidly, water meter manufacturers want to occupy a place in the market, we must continuously improve product quality, improve water meter shell processing level.