CN110186331B - Preparation method of mould-free and flux-free detonating tool - Google Patents
Preparation method of mould-free and flux-free detonating tool Download PDFInfo
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- CN110186331B CN110186331B CN201910615728.8A CN201910615728A CN110186331B CN 110186331 B CN110186331 B CN 110186331B CN 201910615728 A CN201910615728 A CN 201910615728A CN 110186331 B CN110186331 B CN 110186331B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/36—Compositions containing a nitrated organic compound the compound being a nitroparaffin
- C06B25/38—Compositions containing a nitrated organic compound the compound being a nitroparaffin with other nitrated organic compound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/195—Manufacture
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a preparation method of a mould-free and flux-free detonating primer, belonging to the technical field of civil explosive device manufacture, comprising the following steps: melting the TNT according to different casting formulas; adding the calculated Taian or hexogen into the TNT melted in the step (1) according to different pouring formulas of the primary pouring and the secondary pouring, fully stirring and uniformly mixing to obtain a primary pouring mixture and a secondary pouring mixture of the two pouring formulas; the primary casting mixture is poured into the shell of the detonator according to a set amount, secondary casting is carried out after solidification, the secondary casting mixture is poured into a product after primary casting according to a set amount, and the detonator is prepared after cooling.
Description
Technical Field
The invention relates to a preparation method of a primer without a mold and a flux core, relates to a preparation method of a primer manufactured by a process without adopting mold production and adding a flux core, and belongs to the technical field of civil explosive material manufacturing.
Background
The relay detonator is a civil blasting equipment for detonating insensitive explosives. The relay detonator is required to be arranged in the detonator during the initiation, and the relay detonator containing the flux core and exposed out of the main charge is unsafe in the hole descending process due to the arrangement of the detonator, so that the personal safety of operators is greatly threatened. Therefore, the main explosive is produced by a method of isolating other materials for main explosive from the detonator to avoid direct contact in the manufacturing process, and a relatively sensitive detonating flux core is not adopted, so that the use safety can be better improved. At present, in the production process of the relay detonator, a cylindrical hollow paper shell or a plastic shell is generally adopted, and during production, the hollow paper shell is required to be sleeved on a special mould, then materials are injected, and the hollow paper shell is manually withdrawn from the mould after being cooled and formed. The method has the defects of multiple manual processes, low automation degree and low production efficiency, and cannot meet the requirement of industrial automatic production along with the increase of the using amount of the relay primer products year by year.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a die-free and flux-free detonating primer, which overcomes the defects of multiple manual procedures, low automation degree, low production efficiency and high safety risk in the production of the conventional relay detonating primer and realizes the die-free production of the relay detonating primer. The relay detonator can be reliably detonated by adopting a detonator or a low-energy detonating cord so as to improve the safety level of blasting operation.
The technical scheme of the invention is as follows:
a preparation method of a mould-free and flux-free primer comprises the following raw material components:
the medicine for one-time injection comprises the following components in parts by weight: TNT: 60-70%; tai' an or hexogen: 30-40%; the dosage of one-time injection is as follows: the product quality is 60-70%;
the medicine for the second injection is as follows: TNT: 40-50%; tai' an or hexogen: 50-60%; the dosage of the secondary injection is as follows: the product quality is 30-40%.
The preparation method comprises the following steps of,
(1) melting the TNT which is measured in advance according to different casting formulas;
(2) adding the calculated Taian or hexogen into the TNT melted in the step (1) according to different pouring formulas of the primary pouring and the secondary pouring, fully stirring and uniformly mixing to obtain a primary pouring mixture and a secondary pouring mixture of the two pouring formulas;
(3) and pouring the primary pouring mixture into the shell of the detonator according to a set amount, performing secondary pouring after solidification, pouring the secondary pouring mixture into a product after primary pouring according to a set amount, and cooling to obtain the detonator.
Preferably, in the step (3), the detonator shell includes a plastic base, a plastic core rod a and a plastic core rod B are arranged on the plastic base, outer shells are arranged outside the plastic base, the plastic core rod a and the plastic core rod B, a flip cover is arranged above the outer shells, a thin-wall core tube is sleeved on the top of the plastic core rod B, one end of the thin-wall core tube is open, the other end of the thin-wall core tube is sealed, and one end of the thin-wall core tube is connected with the plastic core rod B. The special material and process are adopted to manufacture the temperature-resistant and thin-walled structure, the influence on the detonation energy of the detonator is reduced to the minimum, the detonation reliability is increased, the formula adjustment range is enlarged, the upper cover can be turned over, the cover body is designed into a clamping structure, and the cover body is not easy to open after being covered.
The traditional middle core rod is removed, the user requirements are completely met, a complex priming drug core process is removed, powder is arranged inside an original priming drug core, production needs to be completed in an independent anti-explosion workshop, certain safety risks exist in the assembling and using processes, the mode of formula adjustment is adopted to replace the effect of the powder, the production can be completed on line, the production cost is greatly reduced from the aspects of material use, personnel allocation, equipment allocation maintenance, safety investment and the like, and the safety of each process is improved.
The structure is designed to be matched with three plastic rods for use, and mainly aims to reduce the wall thickness of the core rod at the detonating end of the detonator, manufacture the core rod into a thin-wall structure by adopting different materials and processes, and not influence the detonating capacity of the detonator due to the wall thickness of the core rod, so that the reliable detonating of the detonating device is influenced.
Further preferably, in the step (3), the wall thickness of the thin-walled core tube is 0.3 mm. The thickness of the wall of the common core rod is one third, and the wall thickness can well ensure the detonation effect through a large number of tests.
Preferably, in the step (3), the plastic core bar a penetrates through the flip cover, and the thin-wall core tube is not in contact with the flip cover.
Preferably, in the step (3), a special matched tooling plate and a special matched tooling are designed, the detonator shell is placed on the tooling and the tooling plate, the detonator shell is transferred to a pouring station through a speed doubling chain line body, a primary pouring mixture is poured into the detonator shell according to a set amount, secondary pouring is carried out after solidification is carried out for 12-15 minutes according to process set time, a secondary pouring mixture is automatically poured into a product after primary pouring according to a set amount, and the detonator is manufactured after the line body is cooled by covering a flip cover. The advantage of this design is because TNT can produce the shrinkage cavity phenomenon in the solidification shrink process, for avoiding the emergence of shrinkage cavity phenomenon, adopts the mode of pouring in grades. The materials with different charging formulas are designed, injected into the shell in different amounts for 2 times and cooled to form a product, and the automatic production of the product can be realized without the aid of a die forming mode.
The method mainly innovates the organic combination of the process, the formula, the packaging material and the like through a great deal of experimental research, simplifies the process compared with the prior art, and replaces the original relatively complex and dangerous process of the medicine core manufacturing and assembling by utilizing the adjustment of the formula; the formula is adjusted according to different initiation modes and requirements, so that the applicability and the economical efficiency are better than those of the prior shell and process; the invention is different from the invention of the same type, makes requirements on the aspects of formula, pouring quantity and detonating core tube each time, and makes the detonating core tube into a thin-wall core tube by selecting heat-resistant ultrathin materials and processes, thereby reducing the influence on the detonating energy of the detonator to the minimum, increasing the reliability of detonating and enlarging the range of formula adjustment. Meanwhile, the temperature resistance of the thin-wall core pipe is not influenced by the temperature of materials, the detonation core pipe is ensured not to deform, products are produced without the aid of a mold forming mode, the production process is simplified, the influence of cooling speed is avoided, the phenomenon that a detonation function hole is blocked by flowing materials due to the fact that the materials are not solidified during mold production is avoided, the production efficiency and the reliability of product quality are improved, meanwhile, the dangerous materials are isolated from the outside by using a packaging material due to a shell mode designed by the production method, the safety in the production, transportation and use processes is ensured, and the risk that the detonation tool is difficult to enter water and reject explosion due to poor sealing of the detonation flux core in the use process exists in the traditional process, so that a 0.7MPa continuous 2-hour pressurizing test is required after the detonation flux core production to pick out the detonation flux core with unqualified water inlet. The main charge has no risk, and the main charge has a waterproof function after being mixed. The possibility of explosion rejection due to water immersion does not exist, and the detonation reliability is far superior to that of the traditional process.
The invention has the beneficial effects that:
(1) the method for producing the relay primer has the advantages of no mould, no sensitive flux core, and a fractional component and formula continuous pouring process, and improves the production efficiency by more than 30%.
(2) The production process is simplified, and the automation degree and the production safety level are greatly improved.
(3) The detonator or the low-energy detonating cord can be reliably detonated, various detonating modes are provided, and the safety in the using process is improved.
(4) The ultra-thin detonating end core rod is processed by adopting high-temperature resistant materials, so that the influence on the detonating capacity of the detonator is reduced, and the detonating reliability is improved.
(5) The reliability of detonation is improved by designing the distribution side according to the characteristics of detonation, and the production cost is greatly reduced.
Drawings
FIG. 1 is a front view of a schematic of the construction of a housing in the method of the invention;
FIG. 2 is a semi-sectional view of a schematic of the shell construction in the method of the present invention;
FIG. 3 is a schematic front view of the structure of the upper cover of the housing in the method of the present invention;
FIG. 4 is a schematic top view of the structure of the upper cover of the housing in the method of the present invention.
In the figure: 1. a plastic base; 2. the upper cover can be turned over; (ii) a 3. A plastic core bar A; 4. a plastic core bar B; 5. a plastic core bar C; 6. a housing; 7. a functional hole A; 8. and a functional hole B.
Detailed Description
The present invention will be further described by way of examples, but not limited thereto, with reference to the accompanying drawings.
Example 1:
a preparation method of a mould-free and flux-free primer comprises the following raw material components:
the medicine for one-time injection comprises the following components in parts by weight: TNT: 60 percent; tai' an or hexogen: 40 percent; the dosage of one-time injection is as follows: 60% of the product quality;
the medicine for the second injection is as follows: TNT: 45 percent; tai' an or hexogen: 55 percent; the dosage of the secondary injection is as follows: the product quality is 40%.
The preparation method comprises the following steps of,
(1) melting the TNT which is measured in advance according to different casting formulas;
(2) adding the calculated Taian or hexogen into the TNT melted in the step (1) according to different pouring formulas of the primary pouring and the secondary pouring, fully stirring and uniformly mixing to obtain a primary pouring mixture and a secondary pouring mixture of the two pouring formulas;
(3) and pouring the primary pouring mixture into the shell of the detonator according to a set amount, performing secondary pouring after solidification, pouring the secondary pouring mixture into a product after primary pouring according to a set amount, and cooling to obtain the detonator.
The detonator shell comprises a plastic base, a plastic core rod A and a plastic core rod B are arranged on the plastic base, a shell is arranged outside the plastic base, the plastic core rod A and the plastic core rod B, a flip cover is arranged above the shell, a thin-wall core pipe is sleeved at the top of the plastic core rod B, the wall thickness of the thin-wall core pipe is 0.3mm, one end of the thin-wall core pipe is opened, the other end of the thin-wall core pipe is sealed, and one end of the thin-wall core pipe is connected with the plastic core rod B. The special material and process are adopted to manufacture the temperature-resistant and thin-walled structure, the influence on the detonation energy of the detonator is reduced to the minimum, the detonation reliability is increased, the formula adjustment range is enlarged, the upper cover can be turned over, the cover body is designed into a clamping structure, and the cover body is not easy to open after being covered. During production, the plastic base, the plastic core rod, the shell and the flip cover are assembled into a whole, the flip cover is opened and then placed on a pouring line for pouring, and after pouring is finished, the flip cover is closed. The plastic core rod A penetrates through the turnover cover, and the thin-wall core pipe is not contacted with the turnover cover. Designing a special matched tooling plate and a special matched tooling tool, placing an initiator shell on the tooling tool and the tooling plate, transferring the initiator shell to a casting station through a speed chain line body, casting a primary casting mixture into the initiator shell according to a set amount, solidifying for 12 minutes according to a process set time, then performing secondary casting, automatically casting a secondary casting mixture into a product after primary casting according to the set amount, covering a flip cover, and cooling the line body to obtain the initiator.
The burst performance parameters tested were as follows:
initiation sensitivity: the detonation is reliable and the explosion is complete; explosion speed: more than or equal to 7000 m/s; charge density: not less than 1.56g/cm3(ii) a Water resistance: after being soaked in water with the pressure of 0.3Mpa at room temperature for 48h, the initiation sensitivity is normal by using a detonator.
Example 2:
a method for preparing a die-free and flux-free primer, which comprises the following steps of as described in example 1, except that the raw material components are as follows:
according to the parts by weight, the injection is carried out for one time: TNT: 65 percent; tai' an or hexogen: 35 percent; the primary injection amount is as follows: the product quality is 60 percent.
TNT for secondary injection: 40 percent; tai' an or hexogen: 60 percent; secondary injection dosage: the product quality is 40%.
The burst performance parameters tested were as follows:
initiation sensitivity: the detonation is reliable and the explosion is complete; explosion speed: more than or equal to 7300 m/s; charge density: not less than 1.55g/cm3(ii) a Water resistance: after being soaked in water at room temperature of 0.3Mpa for 48h, the initiation sensitivity is normal by using a detonator or a detonating fuse.
Example 3:
a method for preparing a die-free and flux-free primer, which comprises the following steps of as described in example 1, except that the raw material components are as follows:
according to the parts by weight, the injection is carried out for one time: TNT: 70 percent; tai' an or hexogen: 30 percent; the primary injection amount is as follows: the product quality is 70 percent.
TNT for secondary injection: 40 percent; tai' an: 60 percent; secondary injection dosage: the product quality is 30 percent.
The burst performance parameters tested were as follows:
initiation sensitivity: the detonation is reliable and the explosion is complete; explosion speed: more than or equal to 7300 m/s; charge density: not less than 1.50g/cm3(ii) a Water resistance: after being soaked in water at room temperature of 0.3Mpa for 48h, the initiation sensitivity is normal by using a detonator or a detonating fuse of 5 g/m.
Example 4:
a method for preparing a die-free and flux-free primer, which comprises the following steps of as described in example 1, except that the raw material components are as follows:
according to the parts by weight, the injection is carried out for one time: TNT: 70 percent; tai' an or hexogen: 30 percent; the primary injection amount is as follows: the product quality is 70 percent.
TNT for secondary injection: 50 percent; tai' an: 50 percent; secondary injection dosage: the product quality is 30 percent.
Example 4:
the preparation method of the mould-free and flux-free primer comprises the following steps of (1) pouring a primary pouring mixture into the primer shell according to a set amount, solidifying for 15 minutes according to a process set time, then performing secondary pouring, automatically pouring the secondary pouring mixture into a product after primary pouring according to the set amount, and covering a flip cover to obtain the primer after online cooling.
Comparative example 1
The wall thickness of a shell adopted by the traditional integrated pouring technology is a standard size which is generally 0.8-1.2 mm, the wall thickness size of a core rod cannot be reduced by the traditional injection molding technology, energy loss of a detonator on main charge is large under the size when the detonator is used for detonating, a large amount of test data is obtained, only about 30 detonating charges can be generated every 100 detonating charges, about 70% of the detonating charges cannot be normally detonated, the main charge formula of the traditional technology is also a unified formula, if the detonating reliability of products of the traditional technology is improved, only the main charge formula with high sensitivity can be used as one of the main charge formulas, the occupied proportion needs to be improved to more than 50%, the loss of the detonating energy of the detonator is overcome only by increasing the proportion of the formula, the cost is increased, the safety is reduced, and the defects of the traditional technology are well remedied. The invention can achieve stable detonation due to large detonation energy, and the detonation effect is also improved.
Comparative example 2
The traditional process adopts a mode of detonating the primary explosive by a detonator and then detonating the primary explosive by the primary explosive, the process is relatively complicated, the processing of the primary explosive needs to be finished under the condition of man-machine isolation in an independent and anti-explosion room, the process safety risk is high, and the process can not be automatically finished on line like the method. The traditional process has 2 dangerous processes, 2 dangerous posts and 3 operators and also increases the middle transfer process; in addition, although the two-time medicine injection is carried out, the effects and the effects are different, the two-time medicine injection in the traditional process is beneficial to cooling and preventing shrinkage cavities from being generated, the effects of cooling and preventing shrinkage cavities in the two-time medicine injection process are not important due to the adjustment of the formula and the shell, the phenomenon that liquid medicine flows out due to poor cooling is avoided, the cooling can be completely carried out at the later stage of product boxing, and the production and cooling efficiency is improved by more than 20%. The secondary injection has the main functions of adjusting formulas with different sensitivities and achieving the purpose of reliable initiation; in the traditional process, the risk that the detonating primer is difficult to enter water and prevent explosion due to poor sealing of the detonating flux core in the using process exists, so that a 0.7MPa continuous 2-hour pressing test is required to be carried out after the detonating flux core is produced so as to pick out the detonating flux core with unqualified water inlet. The main charge has no risk, and the main charge has a waterproof function after being mixed. The possibility of explosion rejection due to water immersion does not exist, and the detonation reliability is far superior to that of the traditional process.
Claims (3)
1. A preparation method of a mould-free and flux-free primer is characterized by comprising the following raw material components:
the medicine for one-time injection comprises the following components in parts by weight: TNT: 60-70%; tai' an or hexogen: 30-40%; the dosage of one-time injection is as follows: the product quality is 60-70%;
the medicine for the second injection is as follows: TNT: 40-50%; tai' an or hexogen: 50-60%; the dosage of the secondary injection is as follows: the product quality is 30-40%;
the preparation method comprises the following steps of,
(1) melting the TNT according to different casting formulas;
(2) adding the calculated Taian or hexogen into the TNT melted in the step (1) according to different pouring formulas of the primary pouring and the secondary pouring, fully stirring and uniformly mixing to obtain a primary pouring mixture and a secondary pouring mixture of the two pouring formulas;
(3) pouring the primary pouring mixture into the shell of the detonator according to a set amount, performing secondary pouring after solidification, pouring the secondary pouring mixture into a product after primary pouring according to a set amount, and cooling to obtain the detonator;
the detonator shell comprises a plastic base, a plastic core rod A and a plastic core rod B are arranged on the plastic base, outer shells are arranged outside the plastic base, the plastic core rod A and the plastic core rod B, a turnover cover is arranged above the outer shells, a thin-wall core pipe is sleeved at the top of the plastic core rod B, the opening of one end of the thin-wall core pipe is sealed, and the opening of one end of the thin-wall core pipe is connected with the plastic core rod B; the wall thickness of the thin-wall core tube is 0.3 mm.
2. The method for preparing the initiating explosive device without the mold and the flux core according to the claim 1, wherein in the step (3), the plastic core rod A penetrates through the flip cover, and the thin-wall core tube is not in contact with the flip cover.
3. The method for preparing the initiating device without the mold and the flux core according to the claim 1, wherein in the step (3), a tooling plate and a tooling are designed, the shell of the initiating device is placed on the tooling and the tooling plate, the shell of the initiating device is transferred to a casting station through a speed doubling chain line body, a primary casting mixture is cast into the shell of the initiating device according to a set amount, secondary casting is carried out after solidification is carried out for 12-15 minutes according to a process set time, the secondary casting mixture is automatically cast into a product after primary casting according to a set amount, and the initiating device is prepared after the line body is cooled after a flip cover is covered.
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| CN111256550A (en) * | 2020-03-23 | 2020-06-09 | 山东天宝化工股份有限公司 | Integrated riser-free relay detonator |
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| CN202947537U (en) * | 2012-12-03 | 2013-05-22 | 山东天宝化工股份有限公司 | Novel demoulding-free relay primer with various priming modes |
| CN103196338A (en) * | 2013-04-24 | 2013-07-10 | 山东天宝化工股份有限公司 | Automatic and intelligent primer gating system and working method thereof |
| CN105384590A (en) * | 2015-12-14 | 2016-03-09 | 山东天宝化工股份有限公司 | Primer and preparation method thereof |
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2019
- 2019-07-09 CN CN201910615728.8A patent/CN110186331B/en active Active
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|---|---|---|---|---|
| WO2002012819A1 (en) * | 2000-08-09 | 2002-02-14 | Daicel Chemical Industries, Ltd. | Electric initiator and initiator assembly using it |
| CN201974112U (en) * | 2011-02-28 | 2011-09-14 | 北京北方诺信科技有限公司 | Multifunctional primer |
| CN102226669A (en) * | 2011-04-25 | 2011-10-26 | 湖北东神楚天化工有限公司 | Integrated injection process method of exploder |
| CN102788534A (en) * | 2012-08-03 | 2012-11-21 | 前进民爆股份有限公司 | Casting process for high-explosive primer |
| CN202947537U (en) * | 2012-12-03 | 2013-05-22 | 山东天宝化工股份有限公司 | Novel demoulding-free relay primer with various priming modes |
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