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Casting process of chemical pump shell

A casting process and chemical pump technology, which is applied in the field of chemical pump casing casting process, can solve the problems of lack of corrosion ability of special chemical liquids and high maintenance and replacement costs, and achieve the goals of reducing maintenance and replacement costs, increasing service life and improving purity Effect

Inactive Publication Date: 2018-06-22
ANHUI YINLONG PUMP VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing chemical pumps lack the ability to corrode special chemical liquids, and the cost of maintenance and replacement is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A chemical pump casing casting process, the specific steps are:

[0024] (1) Put ordinary steel scrap, pig iron, ferrochrome and ferrotungsten into the vacuum induction furnace in proportion, raise the vacuum degree in the vacuum induction furnace to 1.5Kpa, raise the temperature to 1450°C, keep the working frequency of the AC power supply at 12000Hz, and charge Inert gas, refining for 20 minutes; then keep the temperature in the vacuum induction furnace at 1350°C, add CuO to the molten metal, stir for 10 minutes, then cool down, exit the vacuum induction furnace, cast into metal round rods, and put the metal round rods The surface is sanded, finished and ready for use; among them, after ordinary steel scrap, pig iron, ferrochrome and ferrotungsten are mixed in proportion, the components in the mixture and the parts by weight of each component are respectively: C: 1.38 parts, Si 1.35 parts , Mn 1.76 parts, P 0.03 parts, S 0.02 parts, Mo: 3.0 parts, Al 9.5 parts, Cr: 24....

Embodiment 2

[0031] A chemical pump casing casting process, the specific steps are:

[0032] (1) Put ordinary steel scrap, pig iron, ferrochrome and ferrotungsten into the vacuum induction furnace in proportion, raise the vacuum degree in the vacuum induction furnace to 3Kpa, raise the temperature to 1350℃, keep the working frequency of the AC power supply at 12500Hz, and charge the Inert gas, refining for 15 minutes; then keep the temperature in the vacuum induction furnace at 1350°C, add CuO to the molten metal, stir for 12 minutes, then cool down, exit the vacuum induction furnace, cast into a metal round rod, and the surface of the metal round rod Sanding, finishing, and standby; wherein, after ordinary steel scrap, pig iron, ferrochrome and ferrotungsten are mixed in proportion, the components in the mixture and the parts by weight of each component are respectively: C: 0.95 parts, Si 1.86 parts, Mn 1.37 parts, P 0.02 parts, S 0.03 parts, Mo: 6.0 parts, Al 7.6 parts, Cr: 36.4 parts, W...

Embodiment 3

[0039] A chemical pump casing casting process, the specific steps are:

[0040] (1) Put ordinary steel scrap, pig iron, ferrochrome and ferrotungsten into the vacuum induction furnace in proportion, raise the vacuum degree in the vacuum induction furnace to 2Kpa, raise the temperature to 1420°C, keep the working frequency of the AC power supply at 12200Hz, and charge the Inert gas, refining for 18 minutes; then keep the temperature in the vacuum induction furnace at 1350°C, add CuO to the molten metal, stir for 11 minutes, then cool down, exit the vacuum induction furnace, cast into a metal round rod, and the surface of the metal round rod Sanding, finishing, and standby; wherein, after ordinary steel scrap, pig iron, ferrochrome and ferrotungsten are mixed in proportion, the components in the mixture and the parts by weight of each component are respectively: C: 1.18 parts, Si 1.56 parts, 1.56 parts of Mn, 0.025 parts of P, 0.035 parts of S, 3.7 parts of Mo, 8.5 parts of Al, ...

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Abstract

The invention provides a casting process of a chemical pump shell. The casting process comprises the specific steps that ordinary steel scrap, pig iron, chromium iron and tungsten iron are put into avacuum induction furnace according to the proportion, refining is conducted, CuO is added into molten metal liquid, and then metal round rods are formed by casting; the metal round rods are put into an electron beam smelting furnace until the metal round rods smelt completely; Pt is added into a metal solution, and then the needed chemical pump shell is formed by casting; and a compact carbon fiber material is cut to the shape matched with the chemical pump shell and attached to the inner wall of the chemical pump shell, and then heating forming solidification is conducted. The casting processof the chemical pump shell has the beneficial effects that by adding CuO, the excellent corrosion resistance of CuO is adopted, and the corrosion resistance of whole metal can be effectively improved; the contents of harmful impurity elements such as O, N, and S in the alloy smelting process can be greatly reduced by using electron beams to smelt alloys, and the high strength, high toughness andhigh corrosion resistance of the metal are ensured; and in addition, the corrosion resistance can be further be improved by combining the Pt element.

Description

technical field [0001] The invention relates to the technical field of casting technology of chemical pump casings, in particular to a casting technology of chemical pump casings. Background technique [0002] The chemical pump is an energy-saving pump designed jointly by the whole country. The performance and technical requirements of the pump are designed according to the performance and size stipulated in the international standard ISO2858. It can be divided into stainless steel chemical pumps, plastic chemical pumps, fluoroplastic chemical pumps, electric chemical pumps, Pneumatic chemical pumps. The advantages of the chemical pumps are that the hydraulic performance of the whole series is reasonable, the user can choose from a wide range, the "back-opening" structure is convenient for maintenance, and the efficiency and suction reach the international advanced level. It is widely used in industrial and urban water supply and drainage, and can also be used for irrigatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/34C22C38/38C22C38/04C22C38/06C22C38/22B32B9/00B32B9/04B32B15/14B32B15/18B32B1/00B32B37/10B32B37/06B32B38/00B32B37/24
CPCB32B1/00B32B5/02B32B9/041B32B15/14B32B15/18B32B37/06B32B37/10B32B37/24B32B38/00B32B2037/243B32B2038/0076B32B2255/02B32B2255/26B32B2262/106B32B2307/558B32B2307/752C22C38/002C22C38/02C22C38/04C22C38/06C22C38/22C22C38/34C22C38/38
Inventor 吴杰孟金华王清龙王文汇汪云唐宗清徐俊东
Owner ANHUI YINLONG PUMP VALVE
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