Stainless steel water meter shell and machining method thereof

A stainless steel and water meter technology, applied in metal processing equipment, manufacturing tools, liquid/fluid solid measurement, etc., can solve the problems of high refractoriness, small thermal expansion, high cost, etc., achieve high normal temperature strength and high temperature strength, improve surface treatment, The effect of improving air permeability

Inactive Publication Date: 2013-06-26
南通北外滩建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bauxite refractory clinker powder has small thermal expansion and high refractoriness, but the cost is higher than that of quartz powder

Method used

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  • Stainless steel water meter shell and machining method thereof
  • Stainless steel water meter shell and machining method thereof
  • Stainless steel water meter shell and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 A kind of stainless steel water meter casing, it adopts following method to prepare:

[0036] 1 Model Preparation

[0037] After pre-foaming, the EPS beads are filled in the mold for filling, and made into a water meter shell to make the surface smooth. All dimensional indicators (shape shrinkage, body shrinkage, and machining allowance) all meet the process requirements, and Fully dry and restore, the drying room is 55-65°C, and the pattern is placed for no less than 6 weeks to facilitate casting.

[0038] The particle size of the EPS beads is 0.2-0.3mm, the expansion ratio is preferably ≥ 40, and the filling pressure is 0.4Mpa;

[0039] 2 groups

[0040] Bond the qualified model with 851 strong adhesive. Because the perimeter of the joint surface is long, press it for about 50-60 seconds to reach the bonding strength. Be careful not to apply too much glue to make the glue joint smooth and easy to dry, and to prevent out of shape. According to the pourin...

Embodiment 2

[0053] A stainless steel water meter housing, which includes a water inlet, a water outlet, a transducer, and an electronic control device, is characterized in that a transducer insertion tube (3) with inner and outer wires is arranged in the inclined tube of the water meter housing, and the insertion tube The inner end is provided with a head (4), and the outer end of the intubation tube is provided with a nozzle (2) with a peripheral wall thickness of 3-10 mm. After the transducer is inserted, it will not directly contact with the water fluid, thereby improving the energy conversion To ensure the service life of the device, the intubation tube can be made of polytetrafluoroplastics.

[0054] According to the method of Example 1, the transducer insertion tube is set in the lost foam in advance, and directly fixed in the inclined tube on the water meter casing after casting.

[0055] According to embodiment 1 lost foam preparation method, provide and adopt the coating of the p...

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Abstract

The invention relates to a stainless steel water meter shell which is cast by using a lost foam process. The fireproof paint of the lost foam comprises 15 parts of zirconite powder, 15 parts of ferrochromium powder, 12 parts of pyrophillite powder, 10 parts of bauxite, 5 parts of magnesium powder, 5 parts of limestone powder, 4 parts of brown emery powder, 1 part of white emery powder, 2.5 parts of lithium-base bentonite, 2 parts of carboxymethyl cellulose, 1 part of palygorskite, 2 parts of sodium silicate, 2 parts of aluminum sulfate, 1.5 parts of VAE (Vinyl Acetateethylene Emulsion), 0.6 part of n-butyl alcohol, 0.2 part of n-caprylic alcohol and 25 parts of water; an energy converter intubation tube with internal and external threads is arranged inside an inclined tube of the water meter shell; and after being inserted, an energy converter is not directly contacted with a water fluid, so that the service life of the energy converter is prolonged and the stainless steel water meter shell has a wide application prospect.

Description

technical field [0001] The invention relates to a lost foam casting method, which belongs to the field of casting technology, in particular to a stainless steel water meter casing and a processing method thereof. Background technique: [0002] With the rapid development of science and technology, the use of stainless steel and carbon steel precision castings is becoming more and more extensive. Except for aviation and weapons, they are also used in almost all industrial sectors, especially electronics, petroleum, chemical industry, transportation, light industry, textiles, and pharmaceuticals. , medical devices, pump and valve components. Lost foam casting is a casting process with less cutting or no cutting. The castings produced have high dimensional accuracy, low surface roughness, high flexibility and strong adaptability. Especially for parts with complex shapes, this casting is superior. sex is more pronounced. It uses a foam model instead of metal and wood molds. Aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04G01F15/14
Inventor 李玉忠
Owner 南通北外滩建设工程有限公司
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