Sintered flux for hydrogen-resistant steel, preparation method thereof, and deposited metal
A technology of sintering flux and hydrogen-resistant steel, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of large differences in hydrogen sulfide corrosion sensitivity, and achieve good arc protection, low crack sensitivity, and good resistance to corrosion. corrosive effect
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[0049] Second, the present invention provides a method for preparing sintered flux for hydrogen-resistant steel, comprising the steps of:
[0050] S1 Mix the components of the sintered flux evenly, then add the adhesive, stir evenly and granulate to obtain the material;
[0051] S2 bakes the material;
[0052] S3 screening the baked materials;
[0053] S4 Sinter the qualified materials after screening at high temperature, and perform secondary screening to remove finer particles to obtain sintered flux.
[0054] In the present invention, in S1, the adhesive is 3.1 modulopotassium sodium water glass.
[0055] In the present invention, in S1, the amount of the adhesive added is 18-21% of the total weight of the flux.
[0056] In the present invention, in S2, the baking process is that the material is baked at a low temperature of 200-230° C. for 40 minutes.
[0057] In the present invention, in S3, the screening process is to use 8-mesh and 40-mesh screens to screen out part...
Embodiment 1
[0066] A sintered flux for hydrogen-resistant steel, the weight ratio of each component is shown in Table 1.
[0067] The preparation method is as follows: Weigh the components of the flux in proportion, put the raw materials of each component in the mixer, stir and mix evenly to obtain powder, add 3.1 mold potassium sodium water glass with a Baume concentration of 38°Bé and stir Mix, potassium sodium water glass add-on accounts for about 18% of powder gross weight. At the same time, the powder is mixed to form granules, granulated, and then baked at a low temperature of 200~230°C for 40 minutes. After baking at a low temperature, the particles other than (8~40) meshes are screened with a sieve, and then subjected to a high temperature of 780~810°C Sinter for 40 minutes, then sieve again, select 40-mesh sieve to remove fine powder, and obtain flux No. 1 with an alkalinity of 2.7.
Embodiment 2
[0069] A sintered flux for hydrogen-resistant steel, the weight ratio of each component is shown in Table 1.
[0070] The preparation method is as follows: Weigh the components of the flux in proportion, put the raw materials of each component in the mixer, stir and mix evenly to obtain powder, add 3.1 modulo potassium sodium water glass with a Baume concentration of 41°Bé and stir Mix, potassium sodium water glass add-on account for about 20% of powder gross weight. At the same time, the powder is mixed to form granules, granulated, and then baked at a low temperature of 200~230°C for 40 minutes. After baking at a low temperature, the particles other than (8~40) meshes are screened with a sieve, and then subjected to a high temperature of 780~810°C Sinter for 40 minutes, then sieve again, and use a 40-mesh sieve to remove fine powder, and obtain flux No. 2 with an alkalinity of 3.0.
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