CN104923781B - A kind of 3D printing method based on self-propagating reaction - Google Patents

A kind of 3D printing method based on self-propagating reaction Download PDF

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Publication number
CN104923781B
CN104923781B CN201510356109.3A CN201510356109A CN104923781B CN 104923781 B CN104923781 B CN 104923781B CN 201510356109 A CN201510356109 A CN 201510356109A CN 104923781 B CN104923781 B CN 104923781B
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powder
self
mesh
propagating
printing
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CN201510356109.3A
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CN104923781A (en
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张国栋
王麒瑜
杨辉
张雅芝
张晖
王帅
张建强
梅青松
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武汉大学
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Abstract

The present invention relates to self-propagating reaction and 3D printing technique, concretely relate to a kind of 3D printing method based on self-propagating reaction.Whole printing process utilize self- propagating chemical heat release, completely(Or part)External heat source is not needed.The automatic holding reaction burnt by fast automatic ripple in print procedure obtains the product of required composition and structure.Printing controllability is good, by changing hot release and transmission speed come the composition and structure of the speed of control process, temperature, conversion ratio and product.Self-propagating reaction is combined with traditional 3D printing technique and improves overall printing speed, shortened printing interval and printed product can be obtained with rapid, high volume, and various metals dusty material can be applied.One it is ignited need not continue energy supply, it is lower to compare laser sintered cost, in hgher efficiency, and equipment is simple, it is easy to manufacture.

Description

A kind of 3D printing method based on self-propagating reaction

Technical field

The present invention relates to self-propagating reaction and 3D printing technique, concretely relate to a kind of 3D based on self-propagating reaction Method of printing.

Background technology

3D printers are a kind of machine of Rapid Prototyping technique, based on it is a kind of mathematical model file, with powder Shape metal or plastics etc. can jointing material, come the technology of constructed object by way of successively printing.Beat with three-dimensional printer Die type, without the need for traditional cutting machine tool and tool and mould, the threedimensional model according to workpiece, passes through under control of the computer By point to line, by line to face, by the layering in face to body is discrete and banking process, being manufactured into for complex three-dimensional entity is quickly realized Shape.

Britain《Economist》Magazine thinks that 3D printing techniques will be promoted and real together with other Digitalisation Manufacture Modes The now third time industrial revolution.At present, existing various business-like 3D printing methods and its equipment on market, including photocuring processes, Fusion sediment method, precinct laser sintering method etc..

But existing 3D printing technique is to utilize selective laser sintering mostly, high cost, speed is printed slowly, printing interval is long, And need lasting energy supply laser sintered to support.If improving the printing effect of common 3D printers, need to fill The filling rate of rate parameter is reduced, and the reduction of filling rate then causes the density of the object for printing to reduce, intensity difference.And it is existing Some 3D printing techniques majorities are for needing the size and precision of the model for printing to be optimized, seeking in brief beat It is bigger, it is faster and more smooth.These technologies cannot quickly obtain print member, and mass production capabilities are poor.

For this problem, a kind of 3D printing method based on self-propagating reaction is devised.Self- propagating is anti-using chemistry A kind of technology of self-heat generation synthetic material is answered, be otherwise known as conbustion synthesis(Combustion Synthesis).Self- propagating skill Art utilizes chemical reaction self-heat generation, completely(Or part)External heat source is not needed.It is anti-from maintenance by auto-wave deflagrate The product of composition and structure required for should obtaining.By changing hot release and transmission speed come the speed of control process, temperature The composition and structure of degree, conversion ratio and product.The technology that self-propagating reaction is combined with 3D printing, device structure are simple, behaviour Make safety, it is with low cost, reaction rate can be improved, shortens printing interval, printed product can be obtained with rapid, high volume, and can Using various metals dusty material.

The content of the invention

To solve above-mentioned technical problem, the present invention provides a kind of 3D printing method based on self-propagating reaction, it is therefore an objective to will Self-propagating reaction is combined with 3D printing, improves printing effect, shortens printing interval, the acquisition printed product of rapid, high volume.

It is that, up to above-mentioned purpose, the present invention is achieved in that:

A kind of 3D printing method based on self-propagating reaction, it is characterised in that:Using following steps:

Step one:To needing the part repaired or build to carry out dimensional measurement and material analysis;

Step 2:To the data of 3 d modeling software typing measurement, it is the component modeling for needing to repair or print, will builds up Threedimensional model be divided into two-dimensional section, and cross section information is transferred to into displacement controller and response controller;

Step 3:Displacement controller transfers ground floor two-dimensional section information, sets filling rate as 0, and the number of plies is 1, controls work As platform carry out around four degree of freedom motion, and control reactive moieties and move up and down so that liquation fluid port does relatively Motion, motion path summation constitute the ground floor two-dimensional section that threedimensional model is divided into, and printing is opened from X-axis maximum coordinates all the time Begin, be moved at X-axis min coordinates, metallic solution is brushed flat by brush board also in semi-molten state after printing, displacement controller control Reactive moieties processed rise 5 ~ 10mm safe distances, and control workbench moves 3 ~ 5mm along -Y direction, and X-direction returns to maximum coordinates Place, repeats said process until ground floor two-dimensional section complete print;

Meanwhile, response controller makes first storehouse in multiple powder storehouses just to liquation fluid port, is ignited powder by igniter End, melts powder storehouse bottom cover plate, molten metal is flowed out from fluid port, is attached to position to be printed, and the first storehouse molten metal is used When to the greatest extent, mobile powder storehouse supporting plate makes next storehouse just to liquation fluid port, next storehouse of igniting;The filled self- propagating powder in powder storehouse by The metal dust composition prepared according to the thermite of chemical reaction proportioning, slag former and according to step one material analysis result;

Step 4:After ground floor two-dimensional section is printed to be finished, displacement controller control printing portion rises certain altitude, Start to print next layer;

Step 5:When printing is fully completed, printing portion is moved at longitudinal axis full-size, and response controller record is printed Time, print materials situation.

According to above-mentioned method, aluminium base self- propagating powder weight proportioning is:200 mesh Al powder 45%-50%, 200 mesh CaSO4Powder 32%-37%, 200 mesh CaF2Powder 4%-6%, 50-100 mesh Al powder 11%-13%.

According to above-mentioned method, cuprio self- propagating powder weight proportioning is:200 mesh Al powder 55%-58%, 200 mesh CaSO4Powder 20%-25%, 200 mesh CaF2Powder 4%-6%, 200 mesh Cu powder 10%-17%.

According to above-mentioned method, iron-based self- propagating powder weight proportioning is:200 mesh Al powder 53%-57%, 200 mesh CaSO4Powder 22%-26%, 200 mesh CaF2Powder 4%-6%, 200 mesh Fe powder 11%-17%.

Present invention contrast prior art has following innovative point:

1. whole printing process utilize self- propagating chemical heat release, completely(Or part)External heat source is not needed;

2. the automatic holding reaction for being burnt by fast automatic ripple in print procedure obtains the product of required composition and structure;

3. controllability is printed good, by changing hot release and transmission speed come the speed of control process, temperature, conversion ratio With the composition and structure of product.

Present invention contrast prior art has following remarkable advantage:

Self-propagating reaction is combined with traditional 3D printing technique and improves overall printing speed, shorten printing interval. One it is ignited need not continue energy supply, it is lower to compare laser sintered cost, in hgher efficiency, and equipment is simple, it is easy to manufacture.

Description of the drawings

3D printing method workflow schematic diagrams of the Fig. 1 based on self-propagating reaction, wherein:1- computers;2- Bit andits controls Device;3-3D printing portions;4- response controllers;5- self-propagating reactions part;6- products;7- sensors.

3D printing method device therefor schematic diagrams of the Fig. 2 based on self-propagating reaction, wherein 21- parts;22- Bit andits controls Device;23- response controllers;24- solution fluid ports;25- powder storehouse;26- igniters;27- brush boards.

Specific embodiment

The basic thought of the present invention is to react to combine self-propagating combustion with traditional 3D printing technique to beat to improve three-dimensional Print production efficiency, reduces printing energy consumption.

In order to deepen the understanding of the present invention, below in conjunction with drawings and Examples, the invention will be further described, should Embodiment is only used for the explanation present invention, does not constitute limiting the scope of the present invention.

Embodiment one:

A kind of 3D printing method based on self-propagating reaction of the present invention, comprises the steps as shown in Figure 1:

Step one:The copper flange for needing to repair is installed and is carried out dimensional measurement and material analysis to flange port, Copper flange gate material is obtained for albronze, external diameter 200mm, internal diameter 100mm, height 30mm, wall thickness 15mm;

Step 2:The use of ProE is to need the copper flange repaired to model, and the data of typing measurement;

Step 3:It is divided into two-dimensional section, each depth of section to be 5mm and pass through software interface the threedimensional model for building up Cross section information is transferred to into displacement controller and response controller;

Step 4:Displacement controller transfers ground floor two-dimensional section information, and radius is done in control X-axis motor, y-axis motor combination For the half circular motion of 50mm-100mm, lower half circle clockwise movement, upper semi-circle counterclockwise movement, Z axis motor drive self- propagating Reactive moieties are moved to above the copper flange mouth of pipe at 5mm, self-propagating reaction liquation fluid port is moved to respect to 3D printing platform The original position of the edge coordinate of ground floor two-dimensional section.Filling rate is set as 0, the number of plies is 1, started working.And 3D printing is flat Platform moves and self-propagating reaction liquation fluid port is done relative motion, and motion path summation is circumference and constitutes threedimensional model segmentation Into ground floor two-dimensional section.From the beginning of printing is at 200 from X-coordinate, after printing, metallic solution is brushed also in semi-molten state Scrubbing brush is put down, and displacement controller control reactive moieties rise 10mm safe distances, and control workbench moves 5mm, X-axis side along -Y direction To returning at 200, repeat said process until ground floor two-dimensional section complete print;

Step 5:Displacement controller works simultaneously, and response controller controls self-propagating reaction part work by controlled motor Make, reactive moieties are divided into some little storehouses by ceramic material, each storehouse built with self-propagating reaction Cu-base powder, consisting of: 200 mesh Al powder 57%, 200 mesh CaSO4Powder 23%, 200 mesh CaF2Powder 5%, 200 mesh Cu-Al alloyed powders 15%.Beaten according to model The ground floor two-dimensional section of print needs to print 5mm height values and determine to react to need 6 storehouse metal dusts, mobile self- propagating powder storehouse support Plate, makes the first storehouse just to self- propagating liquation fluid port, is ignited Cu-base powder by igniter, melts powder storehouse bottom cover plate, Metallic copper liquid is flowed out from fluid port, material is attached to alloyed copper flange position to be printed, when the first storehouse molten metal is used up, move Dynamic self- propagating powder storehouse supporting plate, makes next storehouse just to self- propagating liquation fluid port, next storehouse of igniting;

Step 6:After ground floor two-dimensional section is printed to be finished, alloy copper melt is also in semi-molten state, Bit andits control Device control brush board is at the uniform velocity swiped through along X-direction at the default printing height 5mm of ground floor, makes ground floor upper surface keep smooth, Sensor feedback machined surface situation is to computer, adjustment second layer reaction height and alloy copper powder consumption, then controls reaction Device processed declines 5mm height by Z axis motor control self- propagating part, starts to print next layer;

Step 7:When printing is fully completed, response controller closes self-propagating reaction liquation fluid port, displacement controller Platform is moved at Z axis full-size, the computer recording time-write interval, print materials situation;

Step 8:Copper flange is removed, print platform is cleared up, self-propagating reaction metal dust storehouse is changed.

Embodiment two:

A kind of 3D printing method based on self-propagating reaction of the present invention comprises the steps as shown in Figure 1:

Step one:To needing the aluminium ingot mold for printing to carry out dimensional measurement and material analysis, it is cast iron to obtain aluminium ingot mold materialss, Long 980mm, wide 285mm, high 180mm, wall thickness 15mm;

Step 2:Modeled for aluminium ingot mold to be printed using CATIA Computerized three-dimensionals modeling software, and the number of typing measurement According to;

Step 3:The threedimensional model for building up is divided into into two-dimensional section, and cross section information is transferred to by software interface Displacement controller and response controller;

Step 4:Displacement controller transfers ground floor two-dimensional section information, and straight line is done in control X-axis motor, y-axis motor combination Move, traveling 116mm, 100mm, Z axis motor drive self-propagating reaction to move partially into above aluminium ingot mold at 10mm respectively, make certainly Spread the original position that reaction liquation fluid port moves to the edge coordinate of ground floor two-dimensional section with respect to 3D printing platform.Setting is filled out It is 0 to fill rate, and the number of plies is 1, is started working.And 3D printing platform is moved and causes self-propagating reaction liquation fluid port to do relative motion, Motion path summation is circumference and constitutes the ground floor two-dimensional section that threedimensional model is divided into.It is to open at 980 to print from X-coordinate Begin, after printing, metallic solution is brushed flat by brush board also in semi-molten state, displacement controller control reactive moieties rise 10mm peaces Full distance, control workbench move 5mm along -Y direction, and X-direction is returned at 980, repeat said process until ground floor two dimension Section complete print;;

Step 5:Displacement controller works simultaneously, and response controller controls self-propagating reaction part work by controlled motor Make, reactive moieties are divided into some little storehouses by graphite material, each storehouse built with self-propagating reaction iron-based powder, consisting of: 200 mesh Al powder 56%, 200 mesh CaSO4Powder 25%, 200 mesh CaF2Powder 5%, 200 mesh Fe powder 14%.First printed according to model Layer two-dimensional section needs to print 10mm height values and determine to react to need 10 storehouse metal dusts, mobile self- propagating powder storehouse supporting plate to make Ignited iron-based powder by igniter, melt powder storehouse bottom cover plate, make metal just to self- propagating liquation fluid port in the first storehouse Iron liquid is flowed out from fluid port, and material is attached to aluminium ingot mold position to be printed, when the first storehouse molten metal is used up, mobile self- propagating powder Last storehouse supporting plate, makes next storehouse just to self- propagating liquation fluid port, next storehouse of igniting;

Step 6:After ground floor two-dimensional section is printed to be finished, alloyed iron liquation is also in semi-molten state, Bit andits control Device control brush board is at the uniform velocity swiped through along X-direction at the default printing height 10mm of ground floor, makes ground floor upper surface keep smooth, Sensor feedback machined surface situation is to computer, adjustment second layer reaction height and alloy iron powder consumption, then controls reaction Device processed declines 10mm height by Z axis motor control self- propagating part, starts to print next layer;

Step 7:When printing is fully completed, response controller closes self-propagating reaction liquation fluid port, displacement controller Platform is moved at Z axis full-size, the computer recording time-write interval, print materials situation;

Step 8:Aluminium ingot mold is removed, print platform is cleared up, self-propagating reaction metal dust storehouse is changed.

Embodiment three:

A kind of 3D printing method based on self-propagating reaction of the present invention comprises the steps as shown in Figure 1:

Step one:The aluminum pipe for needing to repair is installed and line up is carried out dimensional measurement and material analysis, obtained aluminum Pipe mouth of pipe material be aluminium alloy, diameter 130mm, wall thickness 15mm;

Step 2:The use of ProE is to need the aluminum pipe repaired to model, and the data of typing measurement;

Step 3:It is divided into two-dimensional section, each depth of section to be 10mm and connect by software the threedimensional model for building up Cross section information is transferred to displacement controller and response controller by mouth;

Step 4:Displacement controller transfers ground floor two-dimensional section information, and radius is done in control X-axis motor, y-axis motor combination For the half circular motion of 65mm, lower half circle clockwise movement, upper semi-circle counterclockwise movement, Z axis motor drive self-propagating reaction portion Divide and be moved to above irriation aluminium pipe mouth at 10mm, make self-propagating reaction liquation fluid port ground floor two dimension be moved to respect to 3D printing platform The original position of the edge coordinate in section.Filling rate is set as 0, the number of plies is 1, started working.And 3D printing platform is moved and is caused Self-propagating reaction liquation fluid port does relative motion, and motion path summation is circumference and constitutes the ground floor that threedimensional model is divided into Two-dimensional section.From the beginning of printing is at 130 from X-coordinate, after printing, metallic solution is brushed flat by brush board also in semi-molten state, position Shift controller control reactive moieties rise 10mm safe distances, and control workbench moves 5mm along -Y direction, and X-direction returns to 130 Place, repeats said process until ground floor two-dimensional section complete print;

Step 5:Displacement controller works simultaneously, and response controller controls self-propagating reaction part work by controlled motor Make, reactive moieties are divided into some little storehouses by ceramic material, each storehouse built with self-propagating reaction aluminum-based powder, consisting of: 200 mesh Al powder 48%, 200 mesh CaSO4Powder 34%, 200 mesh CaF2Powder 6%, 50 mesh Al powder 12%.First printed according to model Layer two-dimensional section needs to print 10mm height values and determines that reaction needs 3 storehouse metal dusts, mobile self- propagating powder storehouse supporting plate, makes the Ignited aluminum-based powder by igniter, melt powder storehouse bottom cover plate, make metallic aluminium just to self- propagating liquation fluid port in one storehouse Liquid is flowed out from fluid port, and material is attached to irriation aluminium pipe mouth position to be printed, when the first storehouse molten metal is used up, mobile self- propagating powder Last storehouse supporting plate, makes next storehouse just to self- propagating liquation fluid port, next storehouse of igniting;

Step 6:After ground floor two-dimensional section is printed to be finished, alloy aluminum melt is also in semi-molten state, Bit andits control Device control brush board is at the uniform velocity swiped through along X-direction at the default printing height 10mm of ground floor, makes ground floor upper surface keep smooth, Sensor feedback machined surface situation is to computer, adjustment second layer reaction height and alloy aluminium powder consumption, then controls reaction Device processed declines 10mm height by Z axis motor control self- propagating part, starts to print next layer;

Step 7:When printing is fully completed, response controller closes self-propagating reaction liquation fluid port, displacement controller Platform is moved at Z axis full-size, the computer recording time-write interval, print materials situation;

Step 8:Aluminum pipe is removed, print platform is cleared up, self-propagating reaction metal dust storehouse is changed.

Claims (4)

1. a kind of 3D printing method based on self-propagating reaction, it is characterised in that:Using following steps:
Step one:To needing the part repaired or build to carry out dimensional measurement and material analysis;
Step 2:To the data of 3 d modeling software typing measurement, it is the component modeling for needing to repair or print, by build up three Dimension module is divided into two-dimensional section, and cross section information is transferred to displacement controller and response controller;
Step 3:Displacement controller transfers ground floor two-dimensional section information, sets filling rate as 0, and the number of plies is 1, controls workbench The motion of four degree of freedom around carrying out, and control reactive moieties and move up and down so that liquation fluid port does relative fortune Dynamic, motion path summation constitutes the ground floor two-dimensional section that threedimensional model is divided into, and printing is opened from X-axis maximum coordinates all the time Begin, be moved at X-axis min coordinates, molten metal is brushed flat by brush board also in semi-molten state after printing, displacement controller control Reactive moieties processed rise 5 ~ 10mm safe distances, and control workbench moves 3 ~ 5mm along -Y direction, and X-direction returns to maximum coordinates Place, repeats said process until ground floor two-dimensional section complete print;
Meanwhile, response controller makes first storehouse in multiple powder storehouses just to liquation fluid port, is ignited powder by igniter, is melted Change powder storehouse bottom cover plate, molten metal is flowed out from fluid port, be attached to position to be printed, when the first storehouse molten metal is used up, Mobile powder storehouse supporting plate, makes next storehouse just to liquation fluid port, next storehouse of igniting;The filled self- propagating powder in powder storehouse is by according to change Learn thermite, slag former and the metal dust composition prepared according to step one material analysis result of reaction ratio;
Step 4:After ground floor two-dimensional section is printed to be finished, displacement controller control printing portion rises certain altitude, starts Print next layer;
Step 5:When printing is fully completed, printing portion is moved at longitudinal axis full-size, when response controller record is printed Between, print materials situation.
2. method according to claim 1, it is characterised in that aluminium base self- propagating powder weight proportioning is:200 mesh Al powder 45%-50%, 200 mesh CaSO4Powder 32%-37%, 200 mesh CaF2Powder 4%-6%, 50-100 mesh Al powder 11%-13%.
3. method according to claim 1, it is characterised in that cuprio self- propagating powder weight proportioning is:200 mesh Al powder 55%-58%, 200 mesh CaSO4Powder 20%-25%, 200 mesh CaF2Powder 4%-6%, 200 mesh Cu powder 10%-17%.
4. method according to claim 1, it is characterised in that iron-based self- propagating powder weight proportioning is:200 mesh Al powder 53%-57%, 200 mesh CaSO4Powder 22%-26%, 200 mesh CaF2Powder 4%-6%, 200 mesh Fe powder 11%-17%.
CN201510356109.3A 2015-06-25 2015-06-25 A kind of 3D printing method based on self-propagating reaction CN104923781B (en)

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CN106626373B (en) * 2015-10-30 2019-08-23 杭州云中新材料有限公司 A kind of dot matrix techniques 3D printing method and the equipment using it
CN106126132A (en) * 2016-06-22 2016-11-16 北京小米移动软件有限公司 The method and device of utensil is repaired by 3 D-printing
GB2564956A (en) 2017-05-15 2019-01-30 Holo Inc Viscous film three-dimensional printing systems and methods

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