Iron-base anticorrosive alloy

Abstract

The invention is a ferric-based eroding resistant alloy which consists of chrome, titanium, silicon, boracium, and other elements. Elements weight percentage in the alloy is as follow: chrome 13 to 18, silicon and / or aluminum 1 to 3, titanium 0.3 to 0.8, boracium 0.003 to 0.03, misch 0.003 to 0.03, ferric and other inevitable extraneous element take the rest; Mo and copper can also be add in by weight ratio of 0.4 to 3. Compared with existing ferric-based eroding resistant alloy, the invention resists salt mist, wet, heat and fungus, electric products adopted the invention is of high reliability and long service life. The invention is of fine processing properties. VOD method can be applied to the material production.

Description

1. Technical field [0001] The invention belongs to alloys, in particular to iron-based alloys containing elements such as chromium, titanium, aluminum, boron, cerium and lanthanum. 2. Background technology [0002] At present, the iron-based corrosion-resistant alloys used to make solenoid valves mainly include: 1J116 (Cr16Fe) conforming to the national standard GBn160, 1J48 conforming to the national military standard GJB2152, 430F (Cr14-18Fe) in the United States, and used in aviation micro-motors The grade 1J6 (FeA16) conforming to the national standard GBn203. The salt spray resistance level of the above-mentioned iron-based corrosion-resistant alloys in the prior art is relatively low, and cannot meet the "three defenses" (anti-salt spray, anti-humidity, and anti-mold) requirements for improving the reliability of electronic products; and 1J116, 430F alloy has a high coercive force, which cannot guarantee the sensitive action of injection solenoid valves with pulses; 1...

AI Technical Summary

Problems solved by technology

The salt spray resistance level of the above-mentioned iron-based corrosion-resistant alloys in the prior art is relatively low, and cannot meet the "three defenses" (anti-salt spray, anti-humidity, and anti-mold) requirements for improving the reliability of electronic products; and 1J116, 430F alloy has a high coercive force, which cannot guarantee the sensitive action of injection solenoid valves with pulses; 1J6 alloy has a large specific iron loss, and the re-inspection pass rate of the manufactured products is low

In order to improve the defects of the above-mentioned iron-based corrosion-resistant alloy, a Chinese invention patent application with a publication number of CN1094454A was published on November 2, 1994, and was granted an invention patent on April 21, 1995; its chemical The ingredients (weight%) are: carbon ≤ 0.03, manganese ≤ 0.20, sulfur ≤ 0.015, phosphorus ≤ 0.015, chromium 18-36, nickel 1-3, silicon 0.1-3, titanium 0.4-1.5, boron 0.003-0.03, cerium lanthanum 0.003-0.03, the remainder is iron; the iron-based alloy has excellent corrosion resistance, but its magnetic flux density (B 25 ) low, B 25 ≯1T, if it is used to make solenoid valves, the solenoid valves cannot move sensitively due to insufficient electromagnetic force during work; therefore, it is not suitable for making solenoid valves with strong and fast linear response, such as automobile engine electronically controlled fuel injection solenoid valves and gas The water heater control solenoid valve is also not suitable for making stator and rotor chips of aviation micro motors with high output power

Images