CN112676771A - Processing technology of high-strength large hexagon bolt - Google Patents
Processing technology of high-strength large hexagon bolt Download PDFInfo
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- CN112676771A CN112676771A CN202011332047.XA CN202011332047A CN112676771A CN 112676771 A CN112676771 A CN 112676771A CN 202011332047 A CN202011332047 A CN 202011332047A CN 112676771 A CN112676771 A CN 112676771A
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Abstract
The invention discloses a processing technology of a high-strength large hexagon bolt, which comprises the following processing technology steps: raw materials screening → raw materials wash → raw materials are dried → hot melt mixes → pouring → shaping of polishing → screw forming → washing edulcoration → anti rust treatment, and the carbon alloy steel raw materials are screened through the screen cloth, reject great raw materials, leave less raw materials, and the screen cloth becomes the slope setting to movable mounting and screening incasement, import and export are seted up to the contained angle department of screening case and screen cloth, and the bottom of screen cloth sets up vibrating motor, washs the raw materials through wasing the case, gets rid of surperficial debris and earth. According to the invention, through the use of the steps of raw material screening → raw material cleaning → raw material drying → hot melt mixing → pouring → grinding and forming → thread forming → cleaning and impurity removal → anti-rust treatment, the problems that the existing large hexagon bolt is insufficient in strength, has potential safety hazards, and needs to be improved in the production process, and the strength of the body of the large hexagon bolt is increased are solved.
Description
Technical Field
The invention relates to the technical field of large hexagon bolt processing, in particular to a processing technology of a high-strength large hexagon bolt.
Background
Big hexagon head bolt is fastener commonly used in the machinery trade, its processing method is mostly cutting process, intensity is difficult to guarantee, when tensile strength surpasss a definite value, place like the transition department of pole and head or the screw thread root in the breach is concentrated causes delayed fracture and fatigue fracture easily, cause serious influence to the engineering quality, can lead to the emergence of incident because of its joint strength's is not enough when serious, current big hexagon bolt intensity is not enough, there is the potential safety hazard, need improve its production technology admittedly, increase its body intensity, for this reason, we propose the processing technology of the big hexagon bolt of high strength.
Disclosure of Invention
The invention aims to provide a processing technology of a high-strength large hexagon bolt, which has the advantage of producing the high-strength large hexagon bolt, and solves the problems that the existing large hexagon bolt is insufficient in strength, has potential safety hazards, and needs to be improved in the production technology and the strength of the body of the large hexagon bolt is increased.
In order to achieve the purpose, the invention provides the following technical scheme: the processing technology of the high-strength large hexagon bolt comprises the following processing technology steps: raw material screening → raw material cleaning → raw material drying → hot melt mixing → pouring → grinding and forming → thread forming → cleaning and impurity removal → anti-rust treatment;
A. screening raw materials: screening carbon alloy steel raw materials through a screen, removing larger raw materials, leaving smaller raw materials, arranging the screen in an inclined manner, movably installing the screen in a screening box, arranging an inlet and an outlet at the included angle between the screening box and the screen, and arranging a vibration motor at the bottom of the screen;
B. cleaning raw materials: cleaning the raw materials through a cleaning box to remove impurities and soil on the surface, wherein the top of the cleaning box is provided with a water pump, a spray head and a plurality of water pipes, and one water pipe is connected to a water faucet;
C. drying raw materials: conveying the cleaned raw materials into a drying box through a conveying belt, wherein a heater is arranged at the top of the drying box, heated air is pumped out through a fan, and the raw materials are dried through a spray head;
D. hot melting and sintering: conveying the carbon alloy steel raw material into a smelting furnace through a conveyor belt, wherein the temperature in the smelting furnace is 1500-;
E. pouring: pouring the mixed solution into a mold, and cooling to obtain a bolt blank;
F. polishing and forming: polishing the surface of the blank, and cutting and polishing a pouring gate, a dead head, metal burrs and a flash generated by pouring;
G. and (3) thread forming: forming threads on the surface of the bolt through a thread rolling machine;
H. cleaning and impurity removing: cleaning the bolt with acid and alkali, and cleaning with clear water to clean oil stains and impurities on the surface of the bolt;
I. and (3) rust prevention treatment: and (4) galvanizing the bolt to increase the antirust performance of the bolt, so as to obtain the finished bolt.
Preferably, the screen mesh is a stainless steel mesh, and the surface of the screen mesh is coated with a corrosion-resistant coating.
Preferably, the washing tank is provided with an inlet and an outlet, and the conveyor belt penetrates through the washing tank.
Preferably, an electric heating wire is arranged in the heater and has a closed structure.
Preferably, the polishing and forming device comprises a polishing machine, a shot blasting machine, a casting head cutting machine and the like.
Preferably, the bottom of the grinding and forming device and the bottom of the thread rolling machine are provided with a material receiving barrel.
Preferably, the cooling method is water cooling and is provided with a waste heat recovery device.
Preferably, the tungsten carbide content of the bolt is 18%, and the cobalt content of the bolt is 2%.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the use of the steps of raw material screening → raw material cleaning → raw material drying → hot melt mixing → pouring → grinding and forming → thread forming → cleaning and impurity removal → anti-rust treatment, the problems that the existing large hexagon bolt is insufficient in strength, has potential safety hazards, and needs to be improved in the production process, and the strength of the body of the large hexagon bolt is increased are solved.
2. The screen is made of stainless steel, and the surface of the screen is coated with a corrosion-resistant layer, so that the service life of the screen can be ensured;
the conveying belt can drive the raw materials to pass through the inlet and the outlet of the cleaning box, so that feeding and discharging are facilitated, and the production time is saved;
the electric heating wire can heat the air inside, so that the drying efficiency is accelerated;
the polishing machine, the shot blasting machine and the dead head cutting machine can rapidly process the blank;
the material receiving barrel can reduce the waste of resources and is convenient for recycling waste materials;
the waste heat recovery device can reduce the waste of heat energy;
tungsten and cobalt are added, so that the strength of the bolt is greatly improved.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The processing technology of the high-strength large hexagon bolt comprises the following processing technology steps: raw material screening → raw material cleaning → raw material drying → hot melt mixing → pouring → grinding and forming → thread forming → cleaning and impurity removal → anti-rust treatment;
A. screening raw materials: screening carbon alloy steel raw materials through a screen, removing larger raw materials, leaving smaller raw materials, arranging the screen in an inclined manner, movably installing the screen in a screening box, arranging an inlet and an outlet at the included angle between the screening box and the screen, and arranging a vibration motor at the bottom of the screen;
B. cleaning raw materials: cleaning the raw materials through a cleaning box to remove impurities and soil on the surface, wherein the top of the cleaning box is provided with a water pump, a spray head and a plurality of water pipes, and one water pipe is connected to a water faucet;
C. drying raw materials: conveying the cleaned raw materials into a drying box through a conveying belt, wherein a heater is arranged at the top of the drying box, heated air is pumped out through a fan, and the raw materials are dried through a spray head;
D. hot melting and sintering: conveying the carbon alloy steel raw material into a smelting furnace through a conveyor belt, wherein the temperature in the smelting furnace is 1500-;
E. pouring: pouring the mixed solution into a mold, and cooling to obtain a bolt blank;
F. polishing and forming: polishing the surface of the blank, and cutting and polishing a pouring gate, a dead head, metal burrs and a flash generated by pouring;
G. and (3) thread forming: forming threads on the surface of the bolt through a thread rolling machine;
H. cleaning and impurity removing: cleaning the bolt with acid and alkali, and cleaning with clear water to clean oil stains and impurities on the surface of the bolt;
I. and (3) rust prevention treatment: and (4) galvanizing the bolt to increase the antirust performance of the bolt, so as to obtain the finished bolt.
The screen cloth is the stainless steel net, and its surface scribbles corrosion-resistant coating, and the screen cloth adopts stainless steel to make, and scribbles corrosion-resistant coating on the surface, can guarantee the life of screen cloth.
The washing case is provided with import and export, and the conveyer belt runs through the washing case, and the conveyer belt can drive the raw materials through the import and the export of wasing the case, and the production time is saved in the feeding and the ejection of compact of being convenient for.
The heater is internally provided with an electric heating wire which is of a closed structure, and the electric heating wire can heat the air inside, so that the drying efficiency is accelerated.
The polishing and forming device comprises a polishing machine, a shot blasting machine, a casting head cutting machine and the like, and the polishing machine, the shot blasting machine and the casting head cutting machine can rapidly process the blank.
The bottom of the polishing and forming device and the bottom of the thread rolling machine are provided with the material receiving barrel, so that the waste of resources can be reduced by the material receiving barrel, and the waste materials can be recycled conveniently.
The cooling method is water cooling and is provided with a waste heat recovery device, and the waste of heat energy can be reduced by the waste heat recovery device.
The content of tungsten carbide used by the bolt is 18%, the content of cobalt is 2%, and the strength of the bolt is greatly improved by adding tungsten and cobalt.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The processing technology of the high-strength large hexagon bolt is characterized in that: the processing technology comprises the following steps: raw material screening → raw material cleaning → raw material drying → hot melt mixing → pouring → grinding and forming → thread forming → cleaning and impurity removal → anti-rust treatment;
A. screening raw materials: screening carbon alloy steel raw materials through a screen, removing larger raw materials, leaving smaller raw materials, arranging the screen in an inclined manner, movably installing the screen in a screening box, arranging an inlet and an outlet at the included angle between the screening box and the screen, and arranging a vibration motor at the bottom of the screen;
B. cleaning raw materials: cleaning the raw materials through a cleaning box to remove impurities and soil on the surface, wherein the top of the cleaning box is provided with a water pump, a spray head and a plurality of water pipes, and one water pipe is connected to a water faucet;
C. drying raw materials: conveying the cleaned raw materials into a drying box through a conveying belt, wherein a heater is arranged at the top of the drying box, heated air is pumped out through a fan, and the raw materials are dried through a spray head;
D. hot melting and sintering: conveying the carbon alloy steel raw material into a smelting furnace through a conveyor belt, wherein the temperature in the smelting furnace is 1500-;
E. pouring: pouring the mixed solution into a mold, and cooling to obtain a bolt blank;
F. polishing and forming: polishing the surface of the blank, and cutting and polishing a pouring gate, a dead head, metal burrs and a flash generated by pouring;
G. and (3) thread forming: forming threads on the surface of the bolt through a thread rolling machine;
H. cleaning and impurity removing: cleaning the bolt with acid and alkali, and cleaning with clear water to clean oil stains and impurities on the surface of the bolt;
I. and (3) rust prevention treatment: and (4) galvanizing the bolt to increase the antirust performance of the bolt, so as to obtain the finished bolt.
2. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: the screen is a stainless steel screen, and the surface of the screen is coated with a corrosion-resistant coating.
3. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: the washing case is provided with import and export, and the conveyer belt runs through the washing case.
4. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: an electric heating wire is arranged in the heater and is of a closed structure.
5. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: the polishing and forming device comprises a polishing machine, a shot blasting machine, a casting head cutting machine and the like.
6. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: and a material receiving barrel is arranged at the bottom of the polishing and forming device and the bottom of the thread rolling machine.
7. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: the cooling method is water cooling and is provided with a waste heat recovery device.
8. The processing technology of the high-strength large hexagon bolt according to claim 1, characterized in that: the content of tungsten carbide used in the bolt is 18%, and the content of cobalt is 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332047.XA CN112676771A (en) | 2020-11-24 | 2020-11-24 | Processing technology of high-strength large hexagon bolt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332047.XA CN112676771A (en) | 2020-11-24 | 2020-11-24 | Processing technology of high-strength large hexagon bolt |
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| CN112676771A true CN112676771A (en) | 2021-04-20 |
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| CN202011332047.XA Pending CN112676771A (en) | 2020-11-24 | 2020-11-24 | Processing technology of high-strength large hexagon bolt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530946A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Round-head torsional shear type high-strength bolt connection pair and production process thereof |
| CN113530945A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Large-hexagon high-strength bolt connecting pair and production process thereof |
| CN113606235A (en) * | 2021-07-21 | 2021-11-05 | 宁波宁力高强度紧固件有限公司 | Hexagonal head torsional shear type high-strength bolt connecting pair and production process thereof |
| CN113685415A (en) * | 2021-08-20 | 2021-11-23 | 宁波九龙紧固件制造有限公司 | Flexible high-strength bolt and production process thereof |
| CN115365763A (en) * | 2022-07-15 | 2022-11-22 | 芜湖天泰航空部件制造有限公司 | Fastening bolt and machining process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530946A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Round-head torsional shear type high-strength bolt connection pair and production process thereof |
| CN113530945A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Large-hexagon high-strength bolt connecting pair and production process thereof |
| CN113606235A (en) * | 2021-07-21 | 2021-11-05 | 宁波宁力高强度紧固件有限公司 | Hexagonal head torsional shear type high-strength bolt connecting pair and production process thereof |
| CN113685415A (en) * | 2021-08-20 | 2021-11-23 | 宁波九龙紧固件制造有限公司 | Flexible high-strength bolt and production process thereof |
| CN115365763A (en) * | 2022-07-15 | 2022-11-22 | 芜湖天泰航空部件制造有限公司 | Fastening bolt and machining process thereof |
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Application publication date: 20210420 |
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