CN103341631B

CN103341631B - A kind of manufacture craft of optic communication three-way connection

Info

Publication number: CN103341631B
Application number: CN201310315269.4A
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: 2015-12-09
Anticipated expiration: 2033-07-25
Also published as: CN103341631A

Abstract

A manufacture craft for optic communication three-way connection, with parts by weight, comprises the following steps: 1) batching, 2) injection moulding, 3) extraction, 4) sintering.The present invention, owing to there is not actual cut, has saved material; Personnel needed for one-shot forming are only 3 and operation is less, adopt artificial pickup, the mould in 2 caves is produced and is risen to 4200 per tour, the mould in 4 caves is produced and is risen to 8000 per tour, adopt manipulator pickup, the mould in 2 caves is produced and is risen to 5000 per tour, and the mould in 4 caves is produced and risen to 10000 per tour, significantly improves production efficiency; Sintering before burr very soft, can remove easily, thus solve burr be difficult to remove hard nut to crack.

Description

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

Technical field

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

Background technology

A product round and square tube body that optical communications industry adopts, as Fig. 1, material is stainless steel, and before adopted processing mode is machined, during by Vehicle Processing mode, about has 10 procedures, uses artificial 10, overall output per manshift about 1000.The material adopted due to Vehicle Processing is real rod, and the weight before processing is 3 times of finished weight after processing, and waste of material is serious; Batch production machining accuracy is unstable, and the burr that Vehicle Processing produces is the difficult problem perplexing whole industry, time and effort consuming; Operation is many, and precision is high, and production process inspection is more difficult, and higher to operating personnel's skill set requirements, effectively cannot ensure product quality, scrappage is higher, is not suitable for producing in enormous quantities, cannot meets the need of market.

Summary of the invention

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

Technical scheme of the present invention is achieved in the following ways: a kind of manufacture craft of optic communication three-way connection, with parts by weight, comprises the following steps: 1) batching, 2) injection moulding, 3) extraction, 4) sintering; It is characterized in that:

1), prepare burden: 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; First powder of stainless steel and wax are added high mixer, 600-650rpm stirring at low speed, heat to 60-65 DEG C and add polypropylene, low-pressure polyethylene and thermoplastic elastomer (TPE) again, mixing continues agitating heating, temperature is made to control at 170-200 DEG C, time controling at 20-30 minute, after discharging by 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 controls 35 DEG C-45 DEG C, injection temperature: 180 °, a district ± 5 °, 175 ° ± 5 °, 2nd district, 170 ° ± 5 °, 3rd district, 160 ° ± 5 °, 4th district; Injection pressure 70 ± 5MPa, injection speed: 60 ± 10g/s, inject time: 2s; Cool time: 1s before storage, 8 ± 3s after storage;

3), extraction: injection blank is put into the trichloroethylene solvent that purity is 99.9%, and addition is as the criterion to cover blank 10-20mm, is incubated 5-6 hour at the temperature of 50-60 DEG C;

4), sinter: the injection blank extracted is put into vacuum sintering furnace and sinters:

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

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

(3) sintering temperature arrives 1330 DEG C of insulations 3 hours, naturally cools to less than 1000 DEG C, applying argon gas after insulation terminates, and start blower fan, temperature is down to less than 80 DEG C and is come out of the stove, and is optic communication three-way connection.

The present invention, owing to there is not actual cut, has saved material; Personnel needed for one-shot forming are only 3 and operation is less, adopt artificial pickup, the mould in 2 caves is produced and is risen to 4200 per tour, the mould in 4 caves is produced and is risen to 8000 per tour, adopt manipulator pickup, the mould in 2 caves is produced and is risen to 5000 per tour, and the mould in 4 caves is produced and risen to 10000 per tour, significantly improves production efficiency; Sintering before burr very soft, can remove easily, thus solve burr be difficult to remove hard nut to crack.Simplify technique, the uniformity of product is good.

Accompanying drawing explanation

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

Detailed description of the invention

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

1, prepare burden: 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; First the powder of stainless steel of said components and wax are added high mixer, low speed (650rpm) stirs, heat and be raised to 60-65 DEG C of polypropylene adding above-mentioned amount again, low-pressure polyethylene and thermoplastic elastomer (TPE) to temperature and continue to stir, temperature controls at 170-200 DEG C, time controling is at 20-30 minute, material is mixed, after discharging by composite material stripping and slicing, cooling, fragmentation, pack, store for future use;

2, injection moulding: the composite material prepared is formed product blank by injection machine by mold injects, technical conditions are: mold temperature controls 35 DEG C-45 DEG C, injection temperature: 180 °, a district ± 5 °, 175 ° ± 5 °, 2nd district, 170 ° ± 5 °, 3rd district, 160 ° ± 5 °, 4th district; Injection pressure, 70 ± 5(MPa), injection speed: 60 ± 10(g/s), inject time: 2s; Cool time: 1s before storage, after storage, 8 ± 3s is injection blank;

3, extract: solvent injection blank being put into trichloro-ethylene (purity 99.9%), addition is as the criterion to cover product 10-20mm, at the temperature of 50-60 °, be incubated 5-6 hour;

4, sinter: the injection blank extracted is put into vacuum sintering furnace and sinters: injection blank is placed on alumina ceramic plate, leaves certain gap, makes to be pasted together in sintering process; Injection blank is avoided directly contacting with graphite boxes or graphite cake in sintering process; Sintering process passes into inert gas shielding, passes into nitrogen time low temperature (1-800 DEG C), and flow-control is at 5-30pa, and use argon gas time high temperature (1000-1330 DEG C), air inflow controls at 10-30pa; Sintering temperature, high temperature 1330 DEG C insulation 3 hours, naturally cools to less than 1000 DEG C, applying argon gas after insulation terminates, and start blower fan, temperature is down to less than 80 DEG C and is come out of the stove, and is optic communication three-way connection.

Claims

1. a manufacture craft for optic communication three-way connection, with parts by weight, comprises the following steps: 1) batching, 2) injection moulding, 3) extraction, 4) sintering; It is characterized in that:

1), prepare burden: 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;

First 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 DEG C 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, mixing continues agitating heating, temperature is made to control at 170-200 DEG C, time controling at 20-30 minute, after discharging by 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 controls 35 DEG C-45 DEG C, injection temperature: 160 ° ± 5 °-180 ° ± 5 °: wherein: one 180 °, district ± 5 °, 175 ° ± 5 °, 2nd district, 170 ° ± 5 °, 3rd district, 160 ° ± 5 °, 4th district; Injection pressure 70 ± 5MPa, injection speed: 60 ± 10g/s, inject time: 2s; Cool time: 1s before storage, 8 ± 3s after storage;

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