Mechanical diaphragm gas pump quality requirements
(1) Material Requirements 1) Parts made of metal materials shall comply with JB 2864 "Electroplating and Chemical Treatment Layers for Vehicles". 4) sealing. Gasoline pump according to the provisions of QC / T 248-1998 test, the engine should meet the work requirements, and no leakage of ministries. Search Keyword: Gasoline Pump Supply Information 1.High Precision CAT shank Tool Holder ,balanced G6.3 or G2.5 For choose,With DIN6499 collet chuck can be straight shank cutter clamping various sizes CAT Tool Holders Cat Tool Holder,Cat Shank Tool Holder,Cat Gsk Shank Collet Chuck,Cat C Tool Holder Shandong Chongde Precision Machinery Co.,LTD , https://www.springcollet.com
2) Components made of non-metallic materials should meet the performance of the gasoline pump, does not corrode the parts in contact.
(2) Appearance Gasoline pump assembly and all components shall not have shrinkage, porosity, rust, burrs and deformation sufficient to affect the quality of the product or appearance of the defect; the fuel pump fastening the connecting parts shall not be loose or fall off.
(3) Performance 1) Manual pump oil vacuum. When equipped with a manual pump, the gasoline pump should work effectively. When the pump and the inlet pipe are dry, the manual pump will operate at a speed of about 50 times per minute. After opening the outlet and closing the inlet When, vacuum suction should not exceed 13.33kPa.
2) suction vacuum degree. Gas pump according to the provisions of QC / T 248-1998 test, the dry vacuum suction should be greater than 13.33kPa, wet vacuum suction should be greater than 40kPa.
3) Closed pressure, the minimum pump oil. Gasoline pump according to the provisions of QC / T 248-1998 test, the value should be in accordance with the following table.
Specifications Gasoline pump size / mm The minimum pump oil / (L / h) Closed pressure / kPa
87300 87 300 26.67-36.67
70190 70 190 20-30.67
70090 90
70050 56 50 20-30.67
56050 50
56030 30
5) Vibration. Gasoline pump vibration test, the gas pump parts should be no damage, no loose fasteners.
6) Durability. Gasoline pump according to the provisions of QC / T 248-1998 test, the test time of not less than 500h, the maximum suction vacuum, closed pressure, the minimum rate of decline in pump oil is not more than 10%, and the parts shall not produce cracks, Deformation and other defects affecting product quality.
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3.Material: 20CrMnTi Accuracy: 0.005mm
Taper tolearance: AT3
Hardness: 56-60HRC