A choke pin for brazing and repairing engine blades with vent holes and its preparation method
An exhaust hole and engine technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of easily polluting the brazing surface, shorten the repair cycle, shorten the drilling process, etc., to improve the effect of choke protection, The effect of shortening the repair cycle and shortening the drilling process
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Embodiment 1
[0029] A preparation method for brazing and repairing a choke pin of an engine vane with vent holes, comprising the following steps:
[0030] S1. Make conical alloy pins, and then perform dry blasting treatment on the surface of the alloy pins;
[0031] S2. Mix and stir 60 parts by weight of glass frit, 35 parts by weight of chromium oxide, 3 parts by weight of clay and 60 parts by weight of distilled water to obtain a glaze slurry. The specific gravity of the glaze slurry in terms of liquid specific gravity is 1.8 , the viscosity is 12s; the glass frit is composed of the following raw materials in terms of mass percentage: 41-45% SiO 2 , 40.5-44.5% BaO, 3.6-4.1% CaO, 4.8-5.3% ZnO, 2.3-2.6% BeO, 2.3-3.1% MoO 3 ;
[0032] S3. Spray a layer of glaze slurry evenly on the surface of the alloy pin, then immerse the alloy pin in the glaze slurry, then lift it up at a speed of 10cm / s, dry it in the air for 35min, then dry it at 80-120°C for 30min, at 1050 Heat preservation and mel...
Embodiment 2
[0035] A preparation method for brazing and repairing a choke pin of an engine vane with vent holes, comprising the following steps:
[0036] S1. Make conical alloy pins, and then perform dry blasting treatment on the surface of the alloy pins;
[0037] S2. Mix and stir the glass frit of 80 parts by weight, the dichromium oxide of 25 parts by weight, the clay of 7 parts by weight and the distilled water of 80 parts by weight to obtain a glaze slurry, and the specific gravity of the glaze slurry in terms of liquid specific gravity is 1.95 , the viscosity is 13.5s; the glass frit is composed of the following raw materials in mass percentage: 41-45% SiO 2 , 40.5-44.5% BaO, 3.6-4.1% CaO, 4.8-5.3% ZnO, 2.3-2.6% BeO, 2.3-3.1% MoO 3 ;
[0038] S3. Spray a layer of glaze slurry evenly on the surface of the alloy pin, then immerse the alloy pin in the glaze slurry, then lift it up at a speed of 20cm / s, dry it in the air for 25min, then dry it at 80-120°C for 60min, at 1050 Heat pres...
Embodiment 3
[0041] A preparation method for brazing and repairing a choke pin of an engine vane with vent holes, comprising the following steps:
[0042] S1. Make conical alloy pins, and then perform dry blasting treatment on the surface of the alloy pins;
[0043] S2. Mix and stir 70 parts by weight of glass frit, 30 parts by weight of chromium oxide, 5 parts by weight of clay and 70 parts by weight of distilled water to obtain a glaze slurry, the specific gravity of which is 1.85 in terms of liquid specific gravity , the viscosity is 12.5s; the glass frit is composed of the following raw materials in terms of mass percentage: 41-45% SiO 2 , 40.5-44.5% BaO, 3.6-4.1% CaO, 4.8-5.3% ZnO, 2.3-2.6% BeO, 2.3-3.1% MoO 3 ;
[0044] S3. Spray a layer of glaze slurry evenly on the surface of the alloy pin, then immerse the alloy pin in the glaze slurry, lift it up at a speed of 15cm / s, dry it in the air for 30min, then dry it at 80-120°C for 40min, and then dry it at 1050℃ Heat preservation and...
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