CN103484755A

CN103484755A - High-temperature-resistant casting

Info

Publication number: CN103484755A
Application number: CN201310399096.9A
Authority: CN
Inventors: 钱坤元
Original assignee: CHANGSHU QINFENG CASTING FACTORY
Current assignee: CHANGSHU QINFENG CASTING FACTORY
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2014-01-01

Abstract

The invention discloses a high-temperature-resistant casting which comprises the following components in percentage by mass: 2.5-3% of C, 1-1.5% of Si, 0.4-0.7% of Mn, 1.0-1.5% of Cu, 0.3-0.4% of Mo, 0.8-1.5% of Cr and the balance of iron and impurities. According to the above mode, by mainly using the high-temperature oxidation resistance of the element chromium and the corrosion resistance of the element copper and the element molybdenum, the high-temperature-resistant casting formed by casting enhances the high temperature resistance and the rusting resistance, and is applicable to the field of manufacturing bases or shells of equipment working under high-temperature and high-humidity environments.

Description

A kind of high temperature resistant foundry goods

Technical field

The present invention relates to casting composition formula field, particularly relate to a kind of high temperature resistant foundry goods.

Background technology

Ironcasting is because price is relatively cheap, stable performance, and that at the aspect such as aspect the base of machine, shell, uses is many.Quality of Iron Casting has a significant impact the performance of engineering goods, and such as rustless property and the dimensional stability of lathe base, the precision that directly affects lathe keeps the life-span; High temperature resistant, the low-temperature performance of each shells and hydraulic part and surfaceness, directly affect working efficiency, limit of pressure and the stability etc. of system.

Because the Working environment of equipment component is more severe, temperature is high, high humidity, thus device housings or base high temperature resistant, corrosion-resistant aspect is relatively focused on, higher to the requirement of spray.

Summary of the invention

The technical problem that the present invention mainly solves is to provide a kind of high temperature resistant foundry goods, and the cast iron quality resistance to elevated temperatures is good, and is not easy corrosion.

For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of high temperature resistant foundry goods is provided, comprise: C, Si, Mn, Cu, Mo, Cr, iron and impurity, the mass percent of described C in foundry goods is 2.5% ~ 3%, the mass percent of described Si in foundry goods is 1% ~ 1.5%, the mass percent of described Mn in foundry goods is 0.4% ~ 0.7%, the mass percent of described Cu in foundry goods is 1.0% ~ 1.5%, the mass percent of described Mo in foundry goods is 0.3% ~ 0.4%, the mass percent of described Cr in foundry goods is 0.8% ~ 1.5%, all the other are iron and impurity.

In a preferred embodiment of the present invention, described impurity comprises micro-harmful element P and S.

In a preferred embodiment of the present invention, described harmful element P and the S total mass percent in foundry goods is less than 0.03%.

The invention has the beneficial effects as follows: a kind of high temperature resistant foundry goods that the present invention points out, contain part molybdenum, chromium and copper, effectively improve intensity, the high temperature resistant and stainless property of cast iron, be applicable to preparing various device base, the shell of working under wet heat condition, good stability.

Embodiment

Below will the technical scheme in the embodiment of the present invention be clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under the creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention comprises:

A kind of high temperature resistant foundry goods, comprise: C, Si, Mn, Cu, Mo, Cr, iron and impurity, the mass percent of described C in foundry goods is 2.5% ~ 3%, the mass percent of described Si in foundry goods is 1% ~ 1.5%, the mass percent of described Mn in foundry goods is 0.4% ~ 0.7%, the mass percent of described Cu in foundry goods is 1.0% ~ 1.5%, the mass percent of described Mo in foundry goods is 0.3% ~ 0.4%, the mass percent of described Cr in foundry goods is 0.8% ~ 1.5%, and all the other are iron and impurity.

Inevitably comprise micro-harmful element P and S in the impurity of cast iron materials, the mobility of molten iron when appropriate P and S can promote to pour into a mould, but too high levels can be the firmly crisp of foundry goods change, should reduce as far as possible, in a kind of high temperature resistant foundry goods of the present invention, described harmful element P and the S total mass percent in foundry goods is less than 0.03%.

A kind of high temperature resistant foundry goods of the present invention contains multiple element, and wherein chromium is the glossiness metal of silvery white, has very high erosion resistance, even if in fervid air under state, oxidation is also very slow and water insoluble; The hardness of fine copper is not high, but the copper of trace can make erosion resistance, intensity and the toughness of foundry goods improve together with molybdenum element.

In sum, a kind of high temperature resistant foundry goods that the present invention points out, the pyro-oxidation resistance of chromium element and the corrosion resistance nature of copper and molybdenum element have mainly been utilized, the foundry goods that forms of cast is high temperature resistant and the resistant to tarnishing ability strengthens, and is applicable to being applied in the plant bottom case of working under high temperature, high humidity environment or the manufacture field of shell.

The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present invention.

Claims

1. a high temperature resistant foundry goods, it is characterized in that, comprise: C, Si, Mn, Cu, Mo, Cr, iron and impurity, the mass percent of described C in foundry goods is 2.5% ~ 3%, the mass percent of described Si in foundry goods is 1% ~ 1.5%, the mass percent of described Mn in foundry goods is 0.4% ~ 0.7%, the mass percent of described Cu in foundry goods is 1.0% ~ 1.5%, the mass percent of described Mo in foundry goods is 0.3% ~ 0.4%, the mass percent of described Cr in foundry goods is 0.8% ~ 1.5%, and all the other are iron and impurity.

2. a kind of high temperature resistant foundry goods according to claim 1, is characterized in that, described impurity comprises micro-harmful element P and S.

3. a kind of high temperature resistant foundry goods according to claim 1, is characterized in that, described harmful element P and the S total mass percent in foundry goods is less than 0.03%.