First, the basic components of enamel Porcelain enamel is a certain composition of the frit glass frit with additives added to make a mixture of glaze, and then coated on the metal surface coating formed.
Second, the enamel substrate surface cleaning Metal preform must be washed before the base, pickling or sand blasting to rust, degreasing and clean. Pump casting is generally shot peening → blasting → low temperature drying.
Third, the application of enamel and enamel firing
1. The enamel coating methods are mainly hand-painted enamel, spray enamel, dip enamel, electrophoresis enamel, electrostatic spray enamel and other. Generally according to the number of products, quality requirements, raw materials, productivity, etc. to choose a reasonable coating method.
2. Enamel firing according to different products choose the right temperature and time. Enamel firing pump casting process is generally: <300 ℃ into the furnace → heating 550 ~ 820 ℃ → off furnace cold → <300 ℃ baked.
Fourth, the performance requirements of castings Castings with enamel should have good mobility, organizational structure must be dense, fine graphite, no pores, cracks and other defects. Its mechanical properties and chemical composition should meet the following requirements:
Fifth, the impact of enamel on the pump performance Enamel coating with its prominent characteristics of the glass and good physical and mechanical properties, making it more widely used in the pump industry.
1. Application of enamel technology Cast iron pump produces excellent corrosion resistance to chemical medium, is resistant to a variety of inorganic acids and organic acids, weak acids and organic solvents, and oil, non-toxic, non-polluting, non-hanging material and electrical insulation, etc. , Significantly expanded the application area of ​​cast iron pump.
2. The application of enamel technology to make the pump flow components smoother, thereby reducing the flow of friction loss and improve pump efficiency, proven to increase efficiency of about 5%, significant energy saving.
The physical examination items of pet urine include urine volume, urine color, odor and transparency. Pathological examination includes routine urine examination, urine sediment examination and some special examinations.
Pet urine can be collected through catheterization, external bladder puncture, and natural urination methods.
Urine should be collected in less than 1 hour in summer and 2 hours in winter.
This product can be used for qualitative/semi-quantitative detection of 14 chemical indexes in human urine, including glucose, bilirubin, ketone body, specific gravity, occult blood, pH, protein, urochologen, nitrite, white blood cells, ascorbic acid, creatinine, calcium and trace albumin.
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