阅读说明：本技术 一种高速眼孔射钉的生产工艺 (Production process of high-speed eyelet shooting nail ) 是由 蒋丽辉 肖海明 裴祖俊 王露 周燕 高跃飞 于 2020-12-11 设计创作，主要内容包括：本发明公开了一种高速眼孔射钉的生产工艺,其特征在于：包括S1：原材料准备；S2：浇铸：将上述原材料熔融成钢水后连铸成钢坯,将钢坯加热至1100-1150℃并进行锻打；S3：轧制盘条；S4：将经过步骤A7处理后的轧制盘条通过冷镦机以及模具成型,获得眼孔射钉,随后将眼孔射钉先通过80-100℃的水进行水浴；S5：将眼孔射钉热风烘干；S6：正火：将烘干后的眼孔射钉进行正火处理,正火升温至600-650℃,保温20-25分钟；S7：淬火：将正火处理后的眼孔射钉进行渗碳淬火处理,淬火温度为760-780℃；S8：将眼孔射钉热风烘干,获得眼孔射钉成品。(The invention discloses a production process of a high-speed eyelet shooting nail, which is characterized by comprising the following steps of: including S1: preparing raw materials; s2: casting: melting the raw materials into molten steel, continuously casting the molten steel into a steel billet, heating the steel billet to 1100-1150 ℃, and forging; s3: rolling a wire rod; s4: forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain an eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at the temperature of 80-100 ℃; s5: drying the eyelet shooting nail by hot air; s6: normalizing: normalizing the dried eyelet ejection nail, heating to 600 ℃ and 650 ℃, and preserving heat for 20-25 minutes; s7: quenching: carrying out carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 760 and 780 ℃; s8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.)

1. A production process of a high-speed eyelet shooting nail is characterized by comprising the following steps: comprises that

S1: preparing raw materials: the raw material comprises the following components of 0.180-0.220% of C, Si: 0.200-0.240%, Mn: 0.420-0.500%, P: 0.006-0.010%, S0.002-0.003%, Mo: 0.015 to 0.025%, Ni: 0.015 to 0.025%, Cr: 0.040 to 0.060%, Cu: 0.020-0.035%, Sn: 0.010 to 0.150 wt%, Sb: 0.010-0.015 wt%, Cr: 10.5-13.0 wt%, N: 0.010 to 0.020 wt%, V: 0.250-0.800 wt%, Ce: 0.800 to 1.300 wt%, Co: 0-0.0300 wt%, Nb: 0.010-0.080 wt%, B: 0.002-0.004 wt%, Ti: 0.300-0.800%, the balance being Fe and impurity elements;

s2: casting: melting the raw materials into molten steel, continuously casting the molten steel into a steel billet, heating the steel billet to 1100-1150 ℃, and forging;

s3: rolling a wire rod: a31: the forged steel billet is subjected to three-roller rough rolling and finish rolling respectively, and the finish rolled wire rod is rolled up and then is subjected to off-line hot charging for heat treatment so as to ensure good and uniform cold processing performance;

s32: putting the rolled wire rod into an annealing furnace, vacuumizing the annealing furnace, filling the annealing furnace with a hydrogen nitrogen atmosphere, heating the annealing furnace to 750-780 ℃ along with the furnace, and keeping the rolled wire rod in the hydrogen nitrogen atmosphere for heat preservation for 60-80 min;

s33: the annealing process of the rolled wire rod enters a natural cooling state along with the furnace, the temperature in the furnace is reduced to 380-420 ℃, and the temperature is kept for 90-120 min;

s34: cooling the rolled wire rod along with the furnace to 260 ℃ at constant temperature of 150 ℃ for 180 min;

s35: the rolled wire rod is continuously and naturally cooled to 110-120 ℃ along with the furnace and discharged from the furnace, and the rolled wire rod discharged from the furnace is air-cooled to room temperature;

s4: forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain an eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at the temperature of 80-100 ℃;

s5: drying the eyelet shooting nail by hot air;

s6: normalizing: normalizing the dried eyelet ejection nail, heating to 600 ℃ and 650 ℃, and preserving heat for 20-25 minutes;

s7: quenching: carrying out carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 760 and 780 ℃;

s8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.

2. The production process of the high-speed eyelet shooting nail according to claim 1, wherein the production process comprises the following steps: in the step A32, the annealing furnace is preheated to 250-300 ℃ before the rolled wire rod is placed into the annealing furnace.

3. The production process of the high-speed eyelet shooting nail according to claim 1, wherein the production process comprises the following steps: the step S7 comprises a temperature rising process, a heat preservation process and a quenching process which are sequentially carried out on the drywall nail, wherein the temperature rising process is to heat the drywall nail subjected to normalizing treatment to 760-780 ℃, the heat preservation is carried out for 11-14min, the time for the drywall nail to stay between 650 ℃ and the upper limit of the temperature is not more than 20min, and the temperature rising rate in the temperature rising process is not more than 2 ℃/S.

4. The production process of the high-speed eyelet shooting nail according to claim 1, wherein the production process comprises the following steps: the coolant used for quenching in step S7 is brine.

5. The production process of the high-speed eyelet shooting nail according to claim 4, wherein the production process comprises the following steps: the saline is a sodium chloride solution with the concentration of 7-10%.

Technical Field

The invention belongs to the technical field of high-speed eyelet shooting nails, and particularly relates to a production process of a high-speed eyelet shooting nail.

Background

The existing nails on the market can only be used manually or by an air gun, and the method is difficult to nail into hard objects such as concrete walls, steel plates and the like due to insufficient impact force. Even if the nail can be driven slowly, a large amount of labor is required, and if the deviation occurs, the nail may be deformed or the concrete may be cracked. On the other hand, common nails on the market cannot be used with powerful nailing machines. In addition, the head of a common nail is flat or spherical after the nail is driven into a substrate, and objects cannot be directly fixed on the head or fixed through a rope.

While some eyelet nails have been produced, with improvements and upgrades to nail guns, many high speed nail guns have been developed which have greater power and faster speed, and conventional eyelet nails have not been able to meet the use requirements of such high speed nail guns, most notably their strength, which has been highly susceptible to bending or breakage of the eyelet nail upon high speed impact of the high speed nail gun.

Disclosure of Invention

The invention aims to provide a production process of a high-speed eyelet shooting nail, which aims to solve the technical problems in the background technology.

In order to solve the technical problem, the invention aims to realize that:

a production process of a high-speed eyelet shooting nail comprises

S1: preparing raw materials: the raw material comprises the following components of 0.180-0.220% of C, Si: 0.200-0.240%, Mn: 0.420-0.500%, P: 0.006-0.010%, S0.002-0.003%, Mo: 0.015 to 0.025%, Ni: 0.015 to 0.025%, Cr: 0.040 to 0.060%, Cu: 0.020-0.035%, Sn: 0.010 to 0.150 wt%, Sb: 0.010-0.015 wt%, Cr: 10.5-13.0 wt%, N: 0.010 to 0.020 wt%, V: 0.250-0.800 wt%, Ce: 0.800 to 1.300 wt%, Co: 0-0.0300 wt%, Nb: 0.010-0.080 wt%, B: 0.002-0.004 wt%, Ti: 0.300-0.800%, the balance being Fe and impurity elements;

s2: casting: melting the raw materials into molten steel, continuously casting the molten steel into a steel billet, heating the steel billet to 1100-1150 ℃, and forging;

s3: rolling a wire rod: a31: the forged steel billet is subjected to three-roller rough rolling and finish rolling respectively, and the finish rolled wire rod is rolled up and then is subjected to off-line hot charging for heat treatment so as to ensure good and uniform cold processing performance;

s32: putting the rolled wire rod into an annealing furnace, vacuumizing the annealing furnace, filling the annealing furnace with a hydrogen nitrogen atmosphere, heating the annealing furnace to 750-780 ℃ along with the furnace, and keeping the rolled wire rod in the hydrogen nitrogen atmosphere for heat preservation for 60-80 min;

s33: the annealing process of the rolled wire rod enters a natural cooling state along with the furnace, the temperature in the furnace is reduced to 380-420 ℃, and the temperature is kept for 90-120 min;

s34: cooling the rolled wire rod along with the furnace to 260 ℃ at constant temperature of 150 ℃ for 180 min;

s35: the rolled wire rod is continuously and naturally cooled to 110-120 ℃ along with the furnace and discharged from the furnace, and the rolled wire rod discharged from the furnace is air-cooled to room temperature;

s4: forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain an eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at the temperature of 80-100 ℃;

s5: drying the eyelet shooting nail by hot air;

s6: normalizing: normalizing the dried eyelet ejection nail, heating to 600 ℃ and 650 ℃, and preserving heat for 20-25 minutes;

s7: quenching: carrying out carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 760 and 780 ℃;

s8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.

On the basis of the above scheme and as a preferable scheme of the scheme: in the step A32, the annealing furnace is preheated to 250-300 ℃ before the rolled wire rod is placed into the annealing furnace.

On the basis of the above scheme and as a preferable scheme of the scheme: the step S7 comprises a temperature rising process, a heat preservation process and a quenching process which are sequentially carried out on the drywall nail, wherein the temperature rising process is to heat the drywall nail subjected to normalizing treatment to 760-780 ℃, the heat preservation is carried out for 11-14min, the time for the drywall nail to stay between 650 ℃ and the upper limit of the temperature is not more than 20min, and the temperature rising rate in the temperature rising process is not more than 2 ℃/S.

On the basis of the above scheme and as a preferable scheme of the scheme: the coolant used for quenching in step S7 is brine.

On the basis of the above scheme and as a preferable scheme of the scheme: the saline is a sodium chloride solution with the concentration of 7-10%.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that: the hardness, the strength and the toughness of the eyelet shooting nail can be effectively improved, the surface glossiness of the eyelet shooting nail can be improved, and the problems of bending and fracture in the using process of the eyelet shooting nail are avoided.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions will be clearly and completely described below with reference to the embodiments.

Example one

A production process of a high-speed eyelet shooting nail comprises

S1: preparing raw materials: the raw material had the following composition C: 0.220%, Si: 0.240%, Mn: 0.500%, P: 0.010%, S: 0.003%, Mo: 0.025%, Ni: 0.025%, Cr: 0.060%, Cu: 0.035%, Sn: 0.150 wt%, Sb: 0.015 wt%, Cr: 13.0 wt%, N: 0.020 wt%, V: 0.800 wt%, Ce: 1.300 wt%, Co: 0.0300 wt%, Nb: 0.080 wt%, B: 0.004 wt%, Ti: 0.800 percent, and the balance of Fe and impurity elements.

S2: casting: the above raw materials were melted into molten steel, continuously cast into a billet, and the billet was heated to 1100 ℃ and forged.

S3: rolling a wire rod: a31: the forged steel billet is subjected to three-roller rough rolling and finish rolling respectively, and the finish rolled wire rod is rolled up and then is subjected to off-line hot charging for heat treatment so as to ensure good and uniform cold processing performance.

S32: putting the rolled wire rod into an annealing furnace, vacuumizing the annealing furnace, filling the annealing furnace with a hydrogen nitrogen atmosphere, heating the annealing furnace to 750 ℃ along with the furnace, and keeping the temperature of the rolled wire rod in the hydrogen nitrogen atmosphere for 60 min; preferably, the annealing furnace is preheated to 250 ℃ before the rolled wire rod is placed into the annealing furnace.

S33: the annealing process of the rolled wire rod enters a natural cooling state along with the furnace, the temperature in the furnace is reduced to 380 ℃, and the temperature is kept for 90 min.

S34: and cooling the rolled wire rod to 220 ℃ along with the furnace, and keeping the temperature for 150 min.

S35: and (4) continuously and naturally cooling the rolled wire rod along with the furnace to 110 ℃, discharging, and air cooling the rolled wire rod discharged from the furnace to room temperature.

S4: and C, forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain the eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at 80 ℃.

S5: and (5) drying the eyelet shooting nail by hot air.

S6: normalizing: and (4) normalizing the dried eyelet shooting nail, heating to 600 ℃ by normalizing, and preserving heat for 20 minutes.

S7: quenching: performing carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 760 ℃; preferably, step S7 includes a heating step, a heat-preserving step and a quenching step, which are sequentially performed on the drywall nail, wherein the heating step is to heat the normalized drywall nail to 760 ℃, and preserve heat for 11min, the time for the drywall nail to stay between 650 ℃ and the upper limit temperature is not more than 20min, and the heating rate in the heating process is not more than 2 ℃/S. Preferably, the cooling liquid used for quenching in step S7 is a 7% sodium chloride solution.

S8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.

The eyelet shooting nail obtained after the treatment of the steps has excellent hardness, strength and toughness, and meanwhile, the surface glossiness of the eyelet shooting nail can be improved, and the problems of bending and fracture in the using process of the eyelet shooting nail are avoided.

Example two

A production process of a high-speed eyelet shooting nail comprises

S1: preparing raw materials: the raw material had the following composition C0.180%, Si: 0.200%, Mn: 0.420%, P: 0.006%, S: 0.002%, Mo: 0.015%, Ni: 0.015%, Cr: 0.040%, Cu: 0.020%, Sn: 0.010 wt%, Sb: 0.010 wt%, Cr: 10.5 wt%, N: 0.010 wt%, V: 0.250 wt%, Ce: 0.800 wt%, Co: 0 wt%, Nb: 0.010 wt%, B: 0.002 wt%, Ti: 0.300 percent, and the balance of Fe and impurity elements.

S2: casting: the above raw materials were melted into molten steel, continuously cast into a billet, and the billet was heated to 1125 ℃ and forged.

S3: rolling a wire rod: a31: the forged steel billet is subjected to three-roller rough rolling and finish rolling respectively, and the finish rolled wire rod is rolled up and then is subjected to off-line hot charging for heat treatment so as to ensure good and uniform cold processing performance.

S32: putting the rolled wire rod into an annealing furnace, vacuumizing the annealing furnace, filling the annealing furnace with a hydrogen nitrogen atmosphere, heating the annealing furnace to 765 ℃ along with the furnace, and keeping the temperature of the rolled wire rod in the hydrogen nitrogen atmosphere for 70 min; preferably, the annealing furnace is preheated to 275 c before the rolled wire rod is placed into the annealing furnace.

S33: and the annealing process of the rolled wire rod enters a furnace natural cooling state, the temperature in the furnace is reduced to 400 ℃, and the temperature is kept for 110 min.

S34: and cooling the rolled wire rod to 240 ℃ along with the furnace, and keeping the temperature for 165 min.

S35: and (4) continuously and naturally cooling the rolled wire rod along with the furnace to 115 ℃ and discharging, and air cooling the rolled wire rod discharged from the furnace to room temperature.

S4: and C, forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain the eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at 90 ℃.

S5: and (5) drying the eyelet shooting nail by hot air.

S6: normalizing: and (4) normalizing the dried eyelet shooting nail, heating to 625 ℃, and preserving heat for 22.5 minutes.

S7: quenching: carrying out carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 770 ℃; preferably, the step S7 includes a temperature increasing step, a heat preservation step and a quenching step, which are sequentially performed on the drywall nail, wherein the temperature increasing step is to heat the normalized drywall nail to 770 ℃, preserve heat for 12.5min, the time for the drywall nail to stay between 650 ℃ and the upper temperature limit is not more than 20min, and the temperature increasing rate in the temperature increasing process is not more than 2 ℃/S. Preferably, the cooling liquid used for quenching in step S7 is 8.5% sodium chloride solution.

S8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.

The eyelet shooting nail obtained after the treatment of the steps has excellent hardness, strength and toughness, and can improve the surface glossiness and avoid the problems of bending and fracture in the use process

EXAMPLE III

A production process of a high-speed eyelet shooting nail comprises

S1: preparing raw materials: the raw material had the following composition C: 0.200%, Si: 0.220%, Mn: 0.480%, P: 0.008% of Mo, 0.0025% of S, and Mo: 0.020%, Ni: 0.020%, Cr: 0.050%, Cu: 0.0275%, Sn: 0.0125 wt%, Sb: 0.0125 wt%, Cr: 11.5 wt%, N: 0.015 wt%, V: 0.520 wt%, Ce: 1.05 wt%, Co: 0.015 wt%, Nb: 0.045 wt%, B: 0.003 wt%, Ti: 0.550%, the balance being Fe and impurity elements.

S2: casting: the above raw materials were melted into molten steel, continuously cast into a billet, and the billet was heated to 1150 ℃ and forged.

S3: rolling a wire rod: a31: the forged steel billet is subjected to three-roller rough rolling and finish rolling respectively, and the finish rolled wire rod is rolled up and then is subjected to off-line hot charging for heat treatment so as to ensure good and uniform cold processing performance.

S32: putting the rolled wire rod into an annealing furnace, vacuumizing the annealing furnace, filling the annealing furnace with a hydrogen nitrogen atmosphere, heating the annealing furnace to 780 ℃ along with the furnace, and keeping the temperature of the rolled wire rod in the hydrogen nitrogen atmosphere for 80 min; preferably, the annealing furnace is preheated to 300 ℃ before the rolled wire rod is placed into the annealing furnace.

S33: and the annealing process of the rolled wire rod enters a furnace natural cooling state, the temperature in the furnace is reduced to 420 ℃, and the temperature is kept for 120 min.

S34: and cooling the rolled wire rod to 260 ℃ along with the furnace, and keeping the temperature for 180 min.

S35: and (4) continuously and naturally cooling the rolled wire rod along with the furnace to 120 ℃, discharging, and air cooling the rolled wire rod discharged from the furnace to room temperature.

S4: and (3) forming the rolled wire rod processed in the step A7 through a cold header and a die to obtain the eyelet shooting nail, and then carrying out water bath on the eyelet shooting nail through water at 100 ℃.

S5: and (5) drying the eyelet shooting nail by hot air.

S6: normalizing: and (4) normalizing the dried eyelet shooting nail, heating to 650 ℃ by normalizing, and keeping the temperature for 25 minutes.

S7: quenching: performing carburizing and quenching treatment on the normalized eyelet shooting nail, wherein the quenching temperature is 780 ℃; preferably, the step S7 includes a heating step, a heat preservation step and a quenching step, which are sequentially performed on the drywall nail, wherein the heating step is to heat the normalized drywall nail to 780 ℃ and preserve heat for 14min, the time for the drywall nail to stay between 650 ℃ and the upper limit of the temperature is not more than 20min, and the heating rate in the heating process is not more than 2 ℃/S. Preferably, the cooling liquid used for quenching in step S7 is a 10% sodium chloride solution.

S8: and drying the eyelet shooting nail by hot air to obtain an eyelet shooting nail finished product.

The eyelet shooting nail obtained after the treatment of the steps has excellent hardness, strength and toughness, and meanwhile, the surface glossiness of the eyelet shooting nail can be improved, and the problems of bending and fracture in the using process of the eyelet shooting nail are avoided.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.