When the main shaft of the crankshaft wears badly, it can be repaired by using a symmetrical welding repair method. The process is: first remove the oil on the surface of the journal, and then use a tweezers to punch the pit around the journal; use a low carbon steel electrode with a diameter of 3 to 4 mm for symmetrical welding, the current can be about 150 amps, the welding layer It is generally about 4 mm; after welding, the journal is 2 to 3 mm larger than the non-wearing journal, and then it is turned and ground.
When a crack occurs, the groove is first opened with a rake, and a U-shaped groove is cut along the surface of the crack. The bottom of the groove is arc-shaped. It is advisable that the groove is not cracked, the width is 13 to 14 mm, and the welding flame is used before welding. The soldered parts are heated to 400°C and then symmetrically welded. After welding, the oil passages are drilled, cut and flattened, turned and ground to a standard size.
When a crack occurs, the groove is first opened with a rake, and a U-shaped groove is cut along the surface of the crack. The bottom of the groove is arc-shaped. It is advisable that the groove is not cracked, the width is 13 to 14 mm, and the welding flame is used before welding. The soldered parts are heated to 400°C and then symmetrically welded. After welding, the oil passages are drilled, cut and flattened, turned and ground to a standard size.
Ultrasound Diagnostic Equipment
This type of tabletop ultrasound is mainly used in hospitals or clinics to examine the abdominal cavity of different people of both sexes, young and old, checking the abdominal cavity for various organs such as the heart, liver, stomach, intestines, etc., and determining whether there is any disease and whether they are healthy or not.
Ultrasound Diagnostic Equipment,Male Gallbladder Polyps Ultrasound Instrument,Children Polycystic Kidney Ultrasound Instrument,Male Polycystic Kidney Ultrasound Instrument
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