CN103341631A

CN103341631A - Manufacturing technique of T-junction for optical communications

Info

Publication number: CN103341631A
Application number: CN2013103152694A
Authority: CN
Inventors: 蒋于良; 殷洪清
Original assignee: DANYANG YUQIAO PRECISION ELEMENT Co Ltd
Current assignee: DANYANG YUQIAO PRECISION ELEMENT Co Ltd
Priority date: 2013-07-25
Filing date: 2013-07-25
Publication date: 2013-10-09
Anticipated expiration: 2033-07-25
Also published as: CN103341631B

Abstract

The invention provides a manufacturing technique of a T-junction for optical communications. According to the manufacturing technique of the T-junction for the optical communications, materials are measured by weight, and the manufacturing technique of the T-junction for the optical communications includes the following steps of (1) charge mixture, (2) injection molding, (3) extracting, and (4) sintering. According to the manufacturing technique of the T-junction for the optical communications, due to the fact that materials are not cut actually, the materials are saved, the T-junction is formed for one time with only three workers, and few procedures are needed. If parts are picked up manually, the yield of a two-cavity die is increased to 4200 per shift, and the yield of a four-cavity die is increased to 8000 per shift. If the parts are picked up by mechanical arms, the yield of the two-cavity die is increased to 5000 per shift, the yield of the four-cavity die is increased to 10000 per shift, and production efficiency is improved to a large extent. Burrs are soft before the T-junctions are sintered and can be removed easily, and thus the problem that the burrs are difficult to remove is solved.

Description

A kind of optic communication manufacture craft of three-way connection

Technical field

The present invention relates to powder metallurgical technology, specifically is a kind of manufacture craft that adopts PM technique production optic communication to use three-way connection.

Background technology

A product round and square tube body that the optic communication industry adopts, as Fig. 1, material is stainless steel, the processing mode that before adopts is machined, during with the Vehicle Processing mode, 10 procedures is arranged approximately, uses artificial 10, about 1000 of overall output per manshift.Because the material that Vehicle Processing is adopted is real rod, the weight before the processing is 3 times of processing back finished weight, and waste of material is serious; Batch process machining accuracy instability, the burr that Vehicle Processing produces are the difficult problems of the whole industry of puzzlement, time and effort consuming; Operation is many, the precision height, and the production process check is difficulty, and operating personnel's technical ability is had relatively high expectations, and can't effectively guarantee product quality, and scrappage is higher, is not suitable for producing in enormous quantities, can't meet the need of market.

Summary of the invention

At above problem, the object of the present invention is to provide a kind of optic communication with the manufacture craft of three-way connection, be existing machining accuracy instability problem when solving the machined production in enormous quantities with powder metallurgy (MIM) technology, to raise the efficiency, reduce cost.

Technical scheme of the present invention realizes in the following manner: a kind of optic communication in weight portion, may further comprise the steps: 1) batching, 2) injection moulding, 3) extraction, 4) sintering with the manufacture craft of three-way connection; It is characterized in that:

1), batching: get: 70-85 parts of powder of stainless steel; 7-8 parts of waxes, 2.3-2.8 parts of polypropylene, 6.5-7.3 parts of low-pressure polyethylenes, 4.5-5.2 parts of thermoplastic elastomer (TPE)s; Earlier powder of stainless steel and wax are added high mixer, 600-650rpm stirring at low speed, heat to 60-65 ℃ and add polypropylene, low-pressure polyethylene and thermoplastic elastomer (TPE) again, mix and continue agitating heating, make temperature control at 170-200 ℃, time control is at 20-30 minute, after the discharging with composite material stripping and slicing, cooling, fragmentation, pack, store for future use;

2), injection moulding: above-mentioned composite material is formed blank by injection machine by mold injects, and its technical conditions are: mold temperature is controlled 35 ℃-45 ℃, injection temperature: 180 ° ± 5 ° in a district, 175 ° ± 5 ° in two districts, 170 ° ± 5 ° in three districts, 160 ° ± 5 ° in four districts; Injection pressure 70 ± 5MPa, injection speed: 60 ± 10 g/s, inject time: 2s; Cool time: 1s before the storage, storage back 8 ± 3s;

3), extraction: will inject blank, to put into purity be 99.9% trichloroethylene solvent, and addition is as the criterion to cover blank 10-20mm, is incubated 5-6 hour under 50-60 ℃ temperature;

4), sintering: will extract good injection blank and put into the vacuum sintering furnace sintering:

(1) the injection blank is placed on the alumina ceramic plate, leaves certain slit each other, avoids being pasted together in the sintering process; Avoid directly contacting with graphite boxes or graphite cake;

(2) feed inert gas shielding in the sintering process, feed nitrogen when 1-800 ℃ of low-temperature sintering, flow-control feeds argon gas at 5-30pa when 1000-1330 ℃ of high temperature, and flow-control is at 10-30pa;

(3) sintering temperature arrives 1330 ℃ of insulations 3 hours, and insulation naturally cools to below 1000 ℃ after finishing, and applying argon gas starts blower fan, and temperature is down to below 80 ℃ and is come out of the stove, and is the optic communication three-way connection.

The present invention owing to do not have actual cut, has saved material; The required personnel of one-shot forming only are that 3 and operation are less, adopt artificial pickup, the mould production in 2 caves rises to 4200 per tour, the mould production in 4 caves rises to 8000 per tour, adopt the manipulator pickup, the mould production in 2 caves rises to 5000 per tour, and the mould production in 4 caves rises to 10000 per tour, has significantly improved production efficiency; Burr is very soft before the sintering, can remove easily, thereby solve the hard nut to crack that burr is difficult to remove.Simplified technology, consistency of product is good.

Description of drawings

Fig. 1 is product structure schematic diagram of the present invention.

The specific embodiment

Being known by Fig. 1, is the product optic communication three-way connection of present embodiment.Its manufacture craft is:

1, batching: get: 70-85 parts of powder of stainless steel; 7-8 parts of waxes, 2.3-2.8 parts of polypropylene, 6.5-7.3 parts of low-pressure polyethylenes, 4.5-5.2 parts of thermoplastic elastomer (TPE)s; Powder of stainless steel and wax with said components adds high mixer earlier, low speed (650rpm) stirs, heat and be raised to 60-65 ℃ of polypropylene that adds above-mentioned amount again, low-pressure polyethylene and thermoplastic elastomer (TPE) to temperature and continue to stir, temperature control is at 170-200 ℃, time, control was at 20-30 minute, material is mixed, after the discharging with composite material stripping and slicing, cooling, fragmentation, pack, store for future use;

2, injection moulding: the composite material that will prepare forms the product blank by injection machine by mold injects, and technical conditions are: mold temperature is controlled 35 ℃-45 ℃, injection temperature: 180 ° ± 5 ° in a district, 175 ° ± 5 ° in two districts, 170 ° ± 5 ° in three districts, 160 ° ± 5 ° in four districts; Injection pressure, 70 ± 5(MPa), injection speed: 60 ± 10 (g/s), inject time: 2s; Cool time: 1s before the storage, storage back 8 ± 3s is the injection blank;

3, extraction: will inject the solvent that blank is put into trichloro-ethylene (purity 99.9%), addition is as the criterion to cover product 10-20mm, and insulation is 5-6 hour under 50-60 ° temperature;

4, sintering: will extract good injection blank and put into the vacuum sintering furnace sintering: the injection blank is placed on the alumina ceramic plate, leaves certain slit, makes to be pasted together in the sintering process; The injection blank is avoided directly contacting with graphite boxes or graphite cake in sintering process; Sintering process feeds inert gas shielding, feeds nitrogen during low temperature (1-800 ℃), and flow-control is used argon gas at 5-30pa during high temperature (1000-1330 ℃), and air inflow is controlled at 10-30pa; Sintering temperature was 1330 ℃ of insulations of high temperature 3 hours, and insulation naturally cools to below 1000 ℃ after finishing, and applying argon gas starts blower fan, and temperature is down to below 80 ℃ and is come out of the stove, and is the optic communication three-way connection.

Claims

1. the manufacture craft of an optic communication usefulness three-way connection in weight portion, may further comprise the steps: 1) batching, 2) injection moulding, 3) extraction, 4) sintering; It is characterized in that:

1), batching: get: 70-85 parts of powder of stainless steel; 7-8 parts of waxes, 2.3-2.8 parts of polypropylene, 6.5-7.3 parts of low-pressure polyethylenes, 4.5-5.2 parts of thermoplastic elastomer (TPE)s;

Earlier 70-85 parts of powder of stainless steel and 7-8 parts of waxes are added high mixer, 600-650rpm stirring at low speed, heat to 60-65 ℃ and add 2.3-2.8 parts of polypropylene, 6.5-7.3 parts of low-pressure polyethylenes and 4.5-5.2 parts of thermoplastic elastomer (TPE)s again, mix and continue agitating heating, make temperature control at 170-200 ℃, time control is at 20-30 minute, after the discharging with composite material stripping and slicing, cooling, fragmentation, pack, store for future use;

2), injection moulding: above-mentioned composite material is formed blank by injection machine by mold injects, and its technical conditions are: mold temperature control is 35 ℃-45 ℃, injection temperature: 160 ° ± 5 °-180 ° ± 5 °, injection pressure 70 ± 5MPa, injection speed: 60 ± 10 g/s, inject time: 2s; Cool time: 1s before the storage, storage back 8 ± 3s;

4), sintering: will extract good injection blank and put into vacuum sintering furnace and be sintered to the optic communication three-way connection.

2. a kind of optic communication according to claim 1 is with the manufacture craft of three-way connection, it is characterized in that: described step 2) in the injection moulding, injection temperature is: 180 ° ± 5 ° in a district, 175 ° ± 5 ° in two districts, 170 ° ± 5 ° in three districts, 160 ° ± 5 ° in four districts.

3. a kind of optic communication according to claim 1 is with the manufacture craft of three-way connection, it is characterized in that: being sintered to of described step 4): (1) injection blank is placed on the alumina ceramic plate, leave certain slit each other, avoid being pasted together in the sintering process; Avoid directly contacting with graphite boxes or graphite cake;