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Method for producing microwave isolator/circulator cavity

A manufacturing method and isolator technology, applied in sustainable buildings, climate sustainability, energy-saving ICT, etc., to achieve high production efficiency, low production cost, and low manufacturing cost

Inactive Publication Date: 2009-05-20
SHANGHAI FUTURE HIGH-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for manufacturing a microwave isolator / circulator cavity to solve the above-mentioned problems of the existing CNC machining manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] a. Mix paraffin, EVA (ethylene-vinyl acetate copolymer), and SA (styrene-acrylonitrile copolymer) with a mass ratio of 0.75:0.20:0.05 at 125°C for 2 hours.

[0031] b. Mix the carbonyl iron powder with an average particle size of 2 μm and the bonding resin through an internal mixer within the temperature range of 135 ° C, and then mix them through an extruder, and then use a pulverizer to make feed granules; the feed granules The particle size is 3 mm; the weight ratio of the nickel carbonyl powder to the bonding resin is 20:1.4.

[0032] c. Molding an injection embryo similar to the cavity through an injection machine, and the injection pressure is 65kg / cm 2 , the injection speed is 55cm 3 / s, the temperature of the first section of the barrel is 135°C, the temperature of the second section is 118°C, the temperature of the third section is 88°C, the temperature of the fourth section is 80°C, the temperature of the fixed mold is 38°C, and the temperature of the moving ...

Embodiment 2

[0036] a. Mix paraffin wax, EVA (ethylene-vinyl acetate copolymer), and SA (styrene-acrylonitrile copolymer) with a mass ratio of 0.79:0.20:0.01 at 135°C for 2 hours.

[0037] b. Mix the carbonyl iron powder with an average particle size of 2 μm and the bonding resin through an internal mixer at a temperature of 140°C, and then mix them through an extruder, and then use a pulverizer to make feed particles; The particle size is 2 mm; the weight ratio of the nickel carbonyl powder to the bonding resin is 20:1.5.

[0038] c. Injection molding an injection embryo similar to the cavity through an injection machine, and the injection pressure is 35kg / cm 2 , the injection speed is 40cm 3 / s, the temperature of the first section of the barrel is 130°C, the temperature of the second section is 110°C, the temperature of the third section is 85°C, the temperature of the fourth section is 70°C, the temperature of the fixed mold is 28°C, and the temperature of the moving mold is 28°C . ...

Embodiment 3

[0042] a. Mix paraffin, EVA (ethylene-vinyl acetate copolymer), and SA (styrene-acrylonitrile copolymer) with a mass ratio of 0.76:0.21:0.03 at 125°C for 2 hours.

[0043] b. Mix the carbonyl iron powder with an average particle size of 3 μm and the bonding resin through an internal mixer at a temperature range of 135°C, and then mix them through an extruder, and then use a pulverizer to make feed granules; The particle size is 1 mm; the weight ratio of the nickel carbonyl powder to the bonding resin is 20:1.5.

[0044] c. Molding an injection embryo similar to the cavity through an injection machine, and the injection pressure is 40kg / cm 2 , the injection speed is 45cm 3 / s, the temperature of the first section of the barrel is 145°C, the temperature of the second section is 115°C, the temperature of the third section is 85°C, the temperature of the fourth section is 80°C, the temperature of the fixed mold is 30°C, and the temperature of the moving mold is 30°C .

[0045] ...

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Abstract

The invention discloses a method for manufacturing a microwave isolator / circulator cavity. The method comprises: a. a step of preparation of adhesive resin; b. a step of reparation of feed, in which alloy steel powder and adhesive resin are mixed and granulized to obtain feed grains; c. a step of injection forming, in which an injected embryo similar to the cavity is formed through injection forming; d. a step of degrease and dissolving the adhesive resin with a solvent; and e. a step of sintering, in which the injected embryo is subjected to heat treatment of sintering finally and the required cavity is obtained. The method has the advantages: 1. products have stable quality and good consistence as mold forming ensures the sizes of products produced in batch are consistent; 2. the production efficiency is high, the batch delivery cycle is short, and requirement of mobile communication market base station for rapid development is met, as 8,000 pieces of products can be produced through injection with four-cavity molds; 3. energy conservation and high efficiency are achieved due to an approximately 100 percent utilization rate of raw materials; and 4. the production cost and the processing procedures are reduced, and more than 30 percent of manufacturing cost are reduced in batch production compared with the prior processing method.

Description

technical field [0001] The invention relates to a method for manufacturing an alloy steel cavity, specifically a method for manufacturing a microwave isolator / circulator cavity, which is widely used in electronic countermeasures, remote sensing, telemetry, radar, missiles, data communication lines, mobile communications, etc. field. Background technique [0002] The current manufacturing method is CNC (computer numerical control machine tool Computer number control) machining. This approach has the following problems: [0003] 1. Raw materials are wasted. About 80% of the materials will be wasted when the alloy steel billet is processed into the finished cavity. [0004] 2. The consistency of the product is not good, the quality fluctuates greatly, and the machining is processed one by one, and there are large differences between single pieces. [0005] 3. The production efficiency is low. One CNC machine tool can only produce about 200 preliminarily processed blanks a da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/10
CPCY02B60/50
Inventor 钟伟李宏书潘运娟柴连璧
Owner SHANGHAI FUTURE HIGH-TECH CO LTD
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