The success of gray iron repair welding is not only of guidance significance for repair of easy-worn roots blower rotor rim bead, but of use for reference to ferrous alloy, non-ferrous alloy items as well.
(3) Combining with the experimental results described above, the possible structures of the citrate complexes in ferrous alloy electrolytes were proposed for the first time based on soft hard acid and basic theory and complexing theory.
(4) A new method for quantification of citrate in ferrous alloy electrolytes was proposed. Citrate in these electrolytes was purified by Dowex 1X8-200 strong basic anion exchange resin and converted into ethyl ester with the catalyst boron trifluroride-aether. After washing
On the basis of above analyses, it is suggested to substitute ferrous alloy dies with copper-base mateials for the prevention of abrasion and increasing its quality.
Review on formation characteristics, properties and appIication of α' martensite in steel and ferrous alloy, thermoelastic martensite in nonferrous alloys as well as hexagonal ε martensite is given.
The success of gray iron repair welding is not only of guidance significance for repair of easy-worn roots blower rotor rim bead, but of use for reference to ferrous alloy, non-ferrous alloy items as well.
(3) Combining with the experimental results described above, the possible structures of the citrate complexes in ferrous alloy electrolytes were proposed for the first time based on soft hard acid and basic theory and complexing theory.
(4) A new method for quantification of citrate in ferrous alloy electrolytes was proposed. Citrate in these electrolytes was purified by Dowex 1X8-200 strong basic anion exchange resin and converted into ethyl ester with the catalyst boron trifluroride-aether. After washing
On the basis of above analyses, it is suggested to substitute ferrous alloy dies with copper-base mateials for the prevention of abrasion and increasing its quality.
Review on formation characteristics, properties and appIication of α' martensite in steel and ferrous alloy, thermoelastic martensite in nonferrous alloys as well as hexagonal ε martensite is given.
Through acceptance and process testing on furnace for high pressure gas quenching(H3636 6bar),the results showed that this equipment can meet the design target with some special characteristics,such as the high suitability for heat treatment on easy contaminated non ferrous alloy(for example Ti alloy)
The precipitation hardening ferrous alloy (14Crl8Nil2Si4Mo4WVNb) for hardfacing the sealing surfaces of high temperature and high pressure valves is described.
An experimental assembly has been set up, which was suitable for the investigation of high temperature corrosion in strong corrosive gases and the continuous weight gain measurement. The investigation of sulfidation behaviour of an Fe-25Cr ferrous alloy in H2-H2S mixed gases at 700-900℃ and 10-1-10-3Pa suphur partial pressure has been carried out.
The internal stress change in the austenite matrix during shape-memory behavior in a ferrous alloy was examined by means of an in-situ neutron diffraction technique.
The maximum copper distribution ratio between the Al2S3-FeS flux and the ferrous alloy was about 28 at the composition where the molar ratio of Al to Fe in the flux was around 2.
The precipitation hardening ferrous alloy (14Crl8Nil2Si4Mo4WVNb) for hardfacing the sealing surfaces of high temperature and high pressure valves is described.This alloy is a kind of Cr-Ni type stainless steel strengthened properly with a selection of chemical elements.It has proved to have excellent properties, particularly in ageing strengthening, crack resistance and machinability.This alloy is in many respects superior to cobalt base alloy and has been used for surfacing va...
This paper describes the effect of some kinds of modifiers on structure and properties of cast copper alloys, and discusses a possibility of the cheaper WW ferrous alloy (a ferrous alloy melted from waste after producing W_2O_5) for use as modifier. Results showed that modification effect of B+V, B is very satisfactory, and also the WW ferrous alloy possesses a good modification effect. In addition, the alloy has advantage of lower cost, simpler processing tec...
This paper deals with the feasibility and the technological principle of direct modification of arsenic-containing hot metal with rate-earth ferrous alloy.The hot metal with moderate arsenic content(below 0.27%)was modified.The average desul-phurization of 69% and the average dearsenification of 44% were achieved.The graphite morphologyand the mechanical properties of the vermicular cast iron were also investigated.The effects of sulphur,arsenic and rare-earth elements on the graphite morphology...
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