CN116062977A - Method for manufacturing multichannel quartz capillary tube - Google Patents
Method for manufacturing multichannel quartz capillary tube Download PDFInfo
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- CN116062977A CN116062977A CN202310056984.4A CN202310056984A CN116062977A CN 116062977 A CN116062977 A CN 116062977A CN 202310056984 A CN202310056984 A CN 202310056984A CN 116062977 A CN116062977 A CN 116062977A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/047—Re-forming tubes or rods by drawing
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B20/00—Processes specially adapted for the production of quartz or fused silica articles, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention provides a method for manufacturing a multichannel quartz capillary, which comprises the steps of preparing a large outer circle hollow tube blank, a capillary hollow tube blank and a solid guide rod blank, wherein the cross section of the capillary hollow tube blank is designed into a trapezoid sector-like shape with arc upper edges and arc lower edges and straight edges at two sides; typesetting: penetrating a solid guide rod blank and a capillary hollow tube blank into the large outer circle hollow tube blank, wherein the capillary hollow tube blank is in an annular array around the solid guide rod blank, the capillary hollow tube blank forms an annular structure which is in seamless adhesion with each other, an inner ring of the annular structure is in adhesion with the outer peripheral surface of the solid guide rod blank, and an outer ring of the annular structure is in adhesion with the inner peripheral surface of the large outer circle hollow tube blank; stretching; annealing and cooling for inspection; finish machining; and the capillary holes are inspected, the whole material of the multichannel quartz capillary tube produced by the method is consistent and stable, the capillary tube is uniformly distributed, and bubbles are not easy to occur.
Description
Technical Field
The invention relates to a production process of a standard appliance for measuring tobacco detection equipment, in particular to a standard rod product, and specifically relates to a method for manufacturing a multichannel quartz capillary tube.
Background
In the tobacco industry, the standard rod for suction resistance is used for calibrating the pressure drop detection equipment for suction resistance/filter stick so as to ensure the accuracy and reliability of the result of the pressure drop detection equipment for cigarette/filter stick, and the pressure drop detection equipment can also be used as a pressure drop device on a smoking machine.
At present, most of the suction resistance standard rods produced at home are of epoxy resin packaging glass capillary type structures.
Typical structure of the standard rod with the suction resistance is as follows: the production process of the porous capillary is completed by bonding single capillary with epoxy resin. In this process, individual capillaries are connected into an annular array bundle, and the hollow spaces between the capillaries are filled with an acrylic or epoxy resin and cured with ultraviolet light or two components.
The manufacturing is because the preparation process of the single-hole capillary is relatively mature, but the preparation method of the porous capillary cannot be obtained by direct stretching at present, and the porous capillary can be formed by combining a plurality of single-hole capillaries and then bonding the single-hole capillaries into a fixed shape through an adhesive.
The manufacturing method has the defects that: when the glass fiber reinforced plastic packaging rod is used for a long time, the epoxy resin and the acrylic resin are used for packaging the hard glass capillary tubes of the annular array of the capillary tubes, the resin component can change color, yellow and age under the influence of multiple factors such as external ultraviolet rays, oxygen and the like, the packaging materials are deformed in a modified mode, the thermal expansion coefficients of different materials are different, and when the glass fiber reinforced plastic packaging rod is used for a long time, the internal geometric shape of the internal capillary tubes can be influenced by the internal expansion stress, so that the long-term stability of the absorption standard rod is influenced.
In addition, in cross-domain applications, hollow optical fibers are also made of glass, one type of multi-channel quartz capillary is made, but optical fibers are generally flexible, the optical fibers and standard rod products used in the tobacco industry are not of the same order in size and specification, the production belongs to an approximate process, a single capillary is adopted for assembly and then drawing operation is carried out, and the single capillary is drawn to a specific length to prepare the porous optical fibers, but the optical fiber products only have length requirements on the capillary, capillary bundles are only approximately arranged, gaps among the capillary bundles are not filled, and a movable space is provided for the capillary to freely move, so that the capillary is prevented from being broken due to bending.
Based on the preparation technology of optical fibers and the specific requirements of standard instruments for measuring tobacco detection equipment, the problems to be overcome by the person skilled in the art mainly comprise:
1. how to ensure the consistency of the integral characters of the porous capillary, and is not easy to deform, especially is not influenced by the external environment to cause corrosion, character change and the like.
2. If a similar drawing process of hollow optical fibers is adopted to prepare the porous capillary, how to solve the problem of gap filling between the capillaries.
3. If a similar drawing process of the hollow fiber is used for preparing the porous capillary, the problem that bubbles cannot appear after filling gaps is solved.
4. If a drawing process similar to that of the hollow optical fiber is adopted to prepare the porous capillary, the problem of relatively uniform distribution of the porous positions after preparation is solved.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a method for manufacturing a multichannel quartz capillary tube, which has the advantages of better consistency and stability of standard bar materials, no bubble in a formed product and uniform distribution of capillary holes.
The basic design concept of the application is as follows: the positions of all capillary hollow tube blanks are determined in advance by means of a solid guide rod blank and a large outer circle hollow tube blank, or the inner space of the large outer circle is filled by adopting a mode of cutting the hollow tube blank in advance, or the problems of the inner space, the capillary forming problem and the problem of easy bubble generation are solved by combining the solid guide rod blank and the large outer circle hollow tube blank to joint the solid rod blank;
and they all adopt quartz glass material, prevent bubble through the evacuation, carry out synchronous stretching under the high temperature, in the tensile process, solid guide bar embryo material can also play the guide effect, prevent capillary hollow tube embryo material from taking place skew and deformation, and temperature and stretching action's combined action make each embryo material melt and combine together, after reaching the settlement length, form the unanimous multichannel quartz capillary of whole material.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a method of manufacturing a multichannel quartz capillary, comprising the steps of:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank and a solid guide rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank and the solid guide rod blank are made of quartz glass, and the cross section of the capillary hollow tube blank is designed into a trapezoid sector-like shape with arc upper edges and arc lower edges and straight sides;
typesetting: penetrating a solid guide rod blank and a capillary hollow tube blank into a large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank is in an annular array around the solid guide rod blank, the capillary hollow tube blank forms an annular structure which is in seamless adhesion with each other, an inner ring of the annular structure is in adhesion with the outer peripheral surface of the solid guide rod blank, and an outer ring of the annular structure is in adhesion with the inner peripheral surface of the large outer circle hollow tube blank;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
A method of manufacturing a multichannel quartz capillary, comprising the steps of:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank, a solid guide rod blank and a joint filling solid rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank, the solid guide rod blank and the joint filling solid rod blank are all made of quartz glass;
typesetting: penetrating a solid guide rod blank, a capillary hollow tube blank and a joint filling solid rod blank into a large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank surrounds the solid guide rod blank in an annular array, the outer diameter of the capillary hollow tube blank is consistent with the width of a gap between the solid guide rod blank and the large outer circle hollow tube blank, and the joint filling solid rod blank is filled in the gap between the capillary hollow tube blank and the solid guide rod blank and the large outer circle hollow tube blank;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
The stretching length of the whole set of blanks is 3-5 times of the length of the blank.
Based on the above, the minimum size of the excircle of the whole set of the stretched blanks is less than or equal to 10mm.
In the finish machining process, the blank is finely ground until the outer surface of the whole set of blank is a mist mirror surface.
A method of manufacturing a multichannel quartz capillary, comprising the steps of:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank, a solid guide rod blank and a joint filling solid rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank, the solid guide rod blank and the joint filling solid rod blank are all made of quartz glass;
typesetting: penetrating a solid guide rod blank, a capillary hollow tube blank and a joint filling solid rod blank into the large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank is divided into at least two layers of annular arrays around the solid guide rod blank, two adjacent layers of capillary hollow tube blanks are tightly attached to each other, the outermost layer of capillary hollow tube blank is tightly attached to the inner wall of the large outer circle hollow tube blank, and the innermost layer of capillary hollow tube blank is tightly attached to the outer wall of the solid guide rod blank; the gap filling solid rod blanks are filled in gaps among the capillary hollow tube blanks and gaps among the capillary hollow tube blanks, the solid guide rod blanks and the large outer circle hollow tube blanks;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and in particular, the invention has the following advantages:
1. in order to solve the problem of caulking and bubble problems, in other schemes, the capillary hollow tube blank is designed into a trapezoid-like structure, and is formed into a ring shape after being combined, so that the assembly state of the capillary hollow tube blank and the solid guide rod blank and the large outer circle hollow tube blank is relatively compact, the difficulty of vacuumizing is greatly reduced, the caulking is not needed to be considered, and the capillary hollow tube blank has relatively high molding stability, high success rate and better performance.
2. The large outer circle hollow tube blank, the capillary hollow tube blank, the solid guide rod blank and the joint filling solid rod blank are spliced together to form the rudiment of the multi-channel quartz capillary, the used materials are the same, the whole product obtained after molding is made of quartz glass, the durability, the stability and the consistency are high, and the requirement that the standard rod needs to keep stable property for a long time is met.
3. In order to ensure that the capillary holes are distributed more uniformly, solid guide rod blanks and large outer circle hollow tube blanks are used as references, and then the capillary hollow tube blanks are distributed and arranged, so that uniform distribution in a blank state is realized, the solid guide rod blanks also play a role in guiding in the high-temperature stretching process, the capillary hollow tube blanks are prevented from deforming, and the distribution uniformity of capillary holes in a finally manufactured product is ensured.
4. To prevent bubbles during stretching and fusion, a vacuum is drawn in advance prior to stretching, and the gas is evacuated.
Drawings
Fig. 1 is a schematic diagram of the structure of the whole ingredients of embodiment 1 of the present invention after typesetting.
Fig. 2 is a schematic diagram of the structure of the whole ingredients of embodiment 2 of the present invention after typesetting.
Fig. 3 is a schematic diagram of the structure of the whole ingredients of embodiment 3 of the present invention after typesetting.
Fig. 4 is a schematic perspective view of the whole ingredients of embodiment 3 of the present invention after typesetting.
Fig. 5 is a schematic diagram of the structure of a single capillary hollow tube blank in example 3 of the present invention.
In the figure: 1. a large outer circle hollow tube blank; 2. capillary hollow tube blanks; 3. solid guide bar blanks; 4. and (5) filling the solid rod blank.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
As shown in fig. 1, a method of manufacturing a multichannel quartz capillary tube includes the steps of:
preparing materials: preparing a large outer circle hollow tube blank 1, a capillary hollow tube blank 2, a solid guide rod blank 3 and a joint filling solid rod blank 4, wherein the large outer circle hollow tube blank 1, the capillary hollow tube blank 2, the solid guide rod blank 3 and the joint filling solid rod blank 4 are all made of quartz glass, and the outer contours of the large outer circle hollow tube blank 1, the capillary hollow tube blank 2, the solid guide rod blank 3 and the joint filling solid rod blank 4 are all cylinders.
The preparation method of the blank mainly uses a drawing method, draws an assembled blank with the shape and the size meeting the requirements at high temperature, and carries out cooling annealing treatment; checking the external dimension and the error of the external shape and the internal center hole of the capillary tube to ensure that the design requirements are met; in addition, a solid quartz glass rod and a coated glass tube with the same length as the capillary tube blank are prepared and respectively used as a solid guide rod blank and a large outer circle hollow tube blank, and under the condition of ensuring safety at normal temperature, the whole set of blank is cleaned by 10% HF acid, and after the blank is cleaned, the blank is cleaned for the second time by absolute ethyl alcohol, so that the blank is clean and free of moisture.
Typesetting: penetrating a solid guide rod blank 3, a capillary hollow tube blank 2 and a joint filling solid rod blank 4 into a large outer circle hollow tube blank 1, wherein the solid guide rod blank 3 is positioned at the circle center, the capillary hollow tube blank 2 surrounds the solid guide rod blank 3 in a ring array, the outer diameter of the capillary hollow tube blank 2 is consistent with the gap width of the solid guide rod blank 3 and the large outer circle hollow tube blank 1, the joint filling solid rod blank 3 is filled in the gap between the capillary hollow tube blank 2 and the solid guide rod blank 3 and the large outer circle hollow tube blank 1, and in the embodiment, the length of the whole set of blank is between 150 mm and 200mm, and the diameter is between 8mm and 18 mm.
The diameter of the caulking solid rod body blank 4 is not unique, and can be one specification or a plurality of specifications, and the caulking solid rod body blank is set according to the size of the gap.
When the blanks are spliced, the glove is needed to be worn, and the attention is paid to the fact that any grease and stains cannot be adhered to the surface of the glass, otherwise, the blanks are polluted and scrapped in the subsequent sintering process.
Stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, completely discharging air, heating, sealing the fused agglomeration at two ends of the whole set of blanks, and exiting the vacuumizing device after sealing so as to prevent interference to the drawing action, and controlling the drawing machine tool to draw the whole set of blanks to a specific length, wherein the drawing length is 3-5 times, preferably 4 times, of the original length in general, and the minimum diameter of the whole set of blanks is drawn to about 9 mm; in the stretching process, the drawing deformation speed is controlled, so that the large outer circle and each blank in the large outer circle can form a hollow tube blank which is wrapped by the capillary in a collapsing way, and the internal gap is eliminated.
And (5) annealing, cooling and checking: and (3) annealing and cooling the whole set of blanks drawn to a specific length to normal temperature, taking the finished blank with clean gloves, checking the appearance quality of the blank, and forming a transparent single qualified drawn finished product, wherein the blank has no flaws, no pollution and full internal fusion.
And (3) finishing: accurately grinding the outer circle of the whole set of blank, placing the blank on special outer circle grinding equipment, and grinding until the outer circle is 8.0+/-0.01 mm and the surface is a fog mirror surface; the blank after the outer circle is ground is cut off the unqualified ends at the two ends, and is cut into a certain length according to the requirement, and the length is usually 120 mm.
Capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment such as microscopic equipment and checking the appearance of the workpiece to confirm whether the workpiece is qualified or not.
Example 2
As shown in fig. 2, a method of manufacturing a multichannel quartz capillary tube includes the steps of:
preparing materials: preparing a large outer circle hollow tube blank 1, a capillary hollow tube blank 2, a solid guide rod blank 3 and a joint filling solid rod blank 4, wherein the large outer circle hollow tube blank 1, the capillary hollow tube blank 2, the solid guide rod blank 3 and the joint filling solid rod blank 4 are all made of quartz glass, and the outer contours of the large outer circle hollow tube blank 1, the capillary hollow tube blank 2, the solid guide rod blank 3 and the joint filling solid rod blank 4 are all cylinders.
The preparation method of the blank mainly uses a drawing method, draws an assembled blank with the shape and the size meeting the requirements at high temperature, and carries out cooling annealing treatment; checking the external dimension and the error of the external shape and the internal center hole of the capillary tube to ensure that the design requirements are met; in addition, a solid quartz glass rod and a coated glass tube with the same length as the capillary tube blank are prepared and respectively used as a solid guide rod blank and a large outer circle hollow tube blank, and under the condition of ensuring safety at normal temperature, the whole set of blank is cleaned by 10% HF acid, and after the blank is cleaned, the blank is cleaned for the second time by absolute ethyl alcohol, so that the blank is clean and free of moisture.
Typesetting: penetrating a solid guide rod blank 3, a capillary hollow tube blank 2 and a joint filling solid rod blank 4 into a large outer circle hollow tube blank 1, wherein the solid guide rod blank 3 is positioned at the center of a circle, the capillary hollow tube blank 2 is divided into at least two layers of annular arrays around the solid guide rod blank 3, two layers of adjacent capillary hollow tube blanks 2 are tightly attached to each other in the embodiment, the outermost capillary hollow tube blank 2 is tightly attached to the inner wall of the large outer circle hollow tube blank 1, and the innermost capillary hollow tube blank 2 is tightly attached to the outer wall of the solid guide rod blank 3; the gap filling solid rod blanks 4 are filled in gaps among the capillary hollow tube blanks 2 and gaps among the capillary hollow tube blanks 2, the solid guide rod blanks 3 and the large outer circle hollow tube blanks 1, and in the embodiment, the outer diameter size of the whole set of blanks is 10mm.
The diameter of the caulking solid rod body blank 4 is not unique, and can be one specification or a plurality of specifications, and the caulking solid rod body blank is set according to the size of the gap.
When the blanks are spliced, the glove is needed to be worn, and the attention is paid to the fact that any grease and stains cannot be adhered to the surface of the glass, otherwise, the blanks are polluted and scrapped in the subsequent sintering process.
Stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: and (3) annealing and cooling the whole set of blanks drawn to a specific length to normal temperature, taking the finished blank with clean gloves, checking the appearance quality of the blank, and forming a transparent single qualified drawn finished product, wherein the blank has no flaws, no pollution and full internal fusion.
And (3) finishing: accurately grinding the outer circle of the whole set of blank, placing the blank on special outer circle grinding equipment, and grinding until the outer circle is 8.0+/-0.01 mm and the surface is a fog mirror surface; the blank after the outer circle is ground is cut off the unqualified ends at the two ends, and is cut into a certain length according to the requirement, and the length is usually 120 mm.
Capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment such as microscopic equipment and checking the appearance of the workpiece to confirm whether the workpiece is qualified or not.
Example 3
As shown in fig. 3-5, a method of manufacturing a multi-channel quartz capillary tube, comprising the steps of:
preparing materials: preparing a large outer circle hollow tube blank 1, a capillary hollow tube blank 2 and a solid guide rod blank 3, wherein the large outer circle hollow tube blank 1, the capillary hollow tube blank 2 and the solid guide rod blank 3 are made of quartz glass, and the cross section of the capillary hollow tube blank 2 is designed into an arc trapezoid-like shape with the upper side and the lower side.
The preparation method of the blank mainly uses a drawing method, draws an assembled blank with the shape and the size meeting the requirements at high temperature, and carries out cooling annealing treatment; checking the external dimension and the error of the external shape and the internal center hole of the capillary tube to ensure that the design requirements are met; in addition, a solid quartz glass rod and a coated glass tube with the same length as the capillary tube blank are prepared and respectively used as a solid guide rod blank and a large outer circle hollow tube blank, and under the condition of ensuring safety at normal temperature, the whole set of blank is cleaned by 10% HF acid, and after the blank is cleaned, the blank is cleaned for the second time by absolute ethyl alcohol, so that the blank is clean and free of moisture.
Typesetting: the solid guide rod blank 3 and the capillary hollow tube blank 2 penetrate into the large outer circle hollow tube blank 1, wherein the solid guide rod blank 3 is positioned at the center of a circle, the capillary hollow tube blank 2 surrounds the solid guide rod blank 3 to form an annular array, the capillary hollow tube blank 2 forms an annular structure which is in seamless adhesion with each other, an inner ring of the annular structure is in adhesion with the outer peripheral surface of the solid guide rod blank 3, the outer ring of the annular structure is in adhesion with the inner peripheral surface of the large outer circle hollow tube blank 1, and in the embodiment, the number of the capillary hollow tube blanks 2 is 10.
The diameter of the caulking solid rod body blank 4 is not unique, and can be one specification or a plurality of specifications, and the caulking solid rod body blank is set according to the size of the gap.
Stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: and (3) annealing and cooling the whole set of blanks drawn to a specific length to normal temperature, taking the finished blank with clean gloves, checking the appearance quality of the blank, and forming a transparent single qualified drawn finished product, wherein the blank has no flaws, no pollution and full internal fusion.
And (3) finishing: accurately grinding the outer circle of the whole set of blank, placing the blank on special outer circle grinding equipment, and grinding until the outer circle is 8.0+/-0.01 mm and the surface is a fog mirror surface; the blank after the outer circle is ground is cut off the unqualified ends at the two ends, and is cut into a certain length according to the requirement, and the length is usually 120 mm.
Capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment such as microscopic equipment and checking the appearance of the workpiece to confirm whether the workpiece is qualified or not.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (10)
1. A method of manufacturing a multichannel quartz capillary tube, characterized by: the method comprises the following steps:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank and a solid guide rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank and the solid guide rod blank are made of quartz glass, and the cross section of the capillary hollow tube blank is designed into a trapezoid sector-like shape with arc upper edges and arc lower edges and straight sides;
typesetting: penetrating a solid guide rod blank and a capillary hollow tube blank into a large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank is in an annular array around the solid guide rod blank, the capillary hollow tube blank forms an annular structure which is in seamless adhesion with each other, an inner ring of the annular structure is in adhesion with the outer peripheral surface of the solid guide rod blank, and an outer ring of the annular structure is in adhesion with the inner peripheral surface of the large outer circle hollow tube blank;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
2. The method of manufacturing a multichannel quartz capillary according to claim 1, wherein: the stretching length of the whole set of blanks is 3-5 times of the length of the original blanks.
3. A method of manufacturing a multichannel quartz capillary according to claim 1 or 2, characterized in that: the minimum size of the excircle of the whole set of the stretched blanks is less than or equal to 10mm.
4. A method of manufacturing a multichannel quartz capillary according to claim 3, characterized in that: in the finish machining process, the finish grinding is carried out until the outer surface of the whole set of blank is a fog mirror surface.
5. A method of manufacturing a multichannel quartz capillary tube, characterized by: the method comprises the following steps:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank, a solid guide rod blank and a joint filling solid rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank, the solid guide rod blank and the joint filling solid rod blank are all made of quartz glass;
typesetting: penetrating a solid guide rod blank, a capillary hollow tube blank and a joint filling solid rod blank into a large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank surrounds the solid guide rod blank in an annular array, the outer diameter of the capillary hollow tube blank is consistent with the width of a gap between the solid guide rod blank and the large outer circle hollow tube blank, and the joint filling solid rod blank is filled in the gap between the capillary hollow tube blank and the solid guide rod blank and the large outer circle hollow tube blank;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
6. The method of manufacturing a multichannel quartz capillary according to claim 5, wherein: the stretching length of the whole set of blanks is 3-5 times of the length of the original blanks.
7. A method of manufacturing a multichannel quartz capillary according to claim 5 or 6, characterized in that: the minimum size of the excircle of the whole set of the stretched blanks is less than or equal to 10mm.
8. The method of manufacturing a multichannel quartz capillary according to claim 7, wherein: in the finish machining process, the finish grinding is carried out until the outer surface of the whole set of blank is a fog mirror surface.
9. A method of manufacturing a multichannel quartz capillary tube, characterized by: the method comprises the following steps:
preparing materials: preparing a large outer circle hollow tube blank, a capillary hollow tube blank, a solid guide rod blank and a joint filling solid rod blank, wherein the large outer circle hollow tube blank, the capillary hollow tube blank, the solid guide rod blank and the joint filling solid rod blank are all made of quartz glass;
typesetting: penetrating a solid guide rod blank, a capillary hollow tube blank and a joint filling solid rod blank into the large outer circle hollow tube blank, wherein the solid guide rod blank is positioned at the center of a circle, the capillary hollow tube blank is divided into at least two layers of annular arrays around the solid guide rod blank, two adjacent layers of capillary hollow tube blanks are tightly attached to each other, the outermost layer of capillary hollow tube blank is tightly attached to the inner wall of the large outer circle hollow tube blank, and the innermost layer of capillary hollow tube blank is tightly attached to the outer wall of the solid guide rod blank; the gap filling solid rod blanks are filled in gaps among the capillary hollow tube blanks and gaps among the capillary hollow tube blanks, the solid guide rod blanks and the large outer circle hollow tube blanks;
stretching: placing the whole set of blanks subjected to typesetting into a drawing machine tool, vacuumizing the space where the whole set of blanks are located or vacuumizing the inside of the whole set of blanks from two ends, heating, sealing the fused agglomerations at two ends of the whole set of blanks, and controlling the drawing machine tool to draw the whole set of blanks to a specific length;
and (5) annealing, cooling and checking: annealing and cooling the whole set of blanks drawn to a specific length, and checking the appearance and internal fusion condition of the whole set of blanks;
and (3) finishing: accurately grinding the outer circle of the whole set of blank, cutting off unqualified areas at two ends, and cutting the rest part into one or more sections of required length;
capillary pore inspection: and checking the shape of the internal capillary holes of the cut workpiece by special equipment to confirm whether the workpiece is qualified or not.
10. The method of manufacturing a multichannel quartz capillary according to claim 9, wherein: the stretching length of the whole set of blanks is 3-5 times of the length of the original blanks, the minimum size of the outer circle of the stretched whole set of blanks is less than or equal to 10mm, and in the finish machining process, the outer surface of the whole set of blanks is finely polished until the outer surface of the whole set of blanks is a fog mirror surface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117069367A (en) * | 2023-10-17 | 2023-11-17 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117069367A (en) * | 2023-10-17 | 2023-11-17 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
| CN117069367B (en) * | 2023-10-17 | 2024-01-02 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
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