A, technical advantage
The characteristics of the technology is mainly manifested in the following aspects:
(a), good wear resistance:
The complex salt bath treatment can greatly improve the wear resistance of the metal surface
1, the rolling wear test and the results are as follows:
2, the sliding wear test results are as follows:
Under the condition of this experiment, 45 steel (raw material) by complex salt bathtreatment, rolling resistance and wear test 9.6 times higher than that of 20 Steel Carburized, 16.2 times higher than that of 45 steel high-frequency quenching, 16.3 times higher than conventional quenching of 45 steel. 45 steel hard chromium platingwear anomalous, because the chromium layer peeling is not really wear value. Shown in several experiments, the wear resistance compound treatment was 2.1 times that ofhard chromium plating.
Under the condition of this experiment: 40Cr steel after compound treatment, sliding wear than 40Cr steel hard chromium plating high 2.1 times, 2.8 times higher than theion nitriding; 14 times higher than that of nitrided 20Cr steel quenching, 23.7 times higher than 40Cr high-frequency quenching, 20-30 times higher than in conventional quenching.
Above the rolling wear test and sliding wear test results, carbon structural complex salt bath treatment (45) and alloy structure (40Cr) wear resistance than conventionalquenching, high frequency hardening high more than 16 times, more than 20 Steel Carburized high more than 9 times, than the hard chromium plating and ion nitriding is more than 2 times.
(two) the corrosion resistance excellent;
(1) CuSo4 solution test
(2) is placed in the open air test:
Experiments show that, complex salt bath treatment, the corrosion resistance of 45 steel in the atmosphere can reach 16 times of hard chromium plating, 26 times that of 1Cr13 stainless steel, 4.5 times that of 1cr18Ni9ti stainless steel.
(3) the salt spray test:
The above test results, the compound treatment of 45 steel salt fog corrosioncapacity is 5 times of 1cr18Ni9ti austenitic stainless steel decorative chromium plating,35 times, 40 times and 70 times of 1Cr13 stainless steel, hard chromium plating,blackening 280 times.
At the same time, complex salt bath treatment has significantly improved fatiguestrength of material, the micro deformation, so it is widely used, extended quite rapidly, the technology has been widely used abroad in Germany and the United States, Japan, Britain, France and other countries more than 40 to more than 800users, but in China there is no widely used.