阅读说明：本技术 一种高炉灰氧化铁制作哑铃杠铃片的制备方法 (Preparation method for dumbbell barbell disc made of blast furnace dust iron oxide ) 是由 赵昆山 于 2020-12-09 设计创作，主要内容包括：本发明涉及哑铃杠铃的生产加工领域,更具体而言,涉及一种高炉灰氧化铁制作哑铃杠铃片的制备方法,在模具中,在常温下压延成型制得哑铃杠铃片初坯,将哑铃杠铃片初坯装入还原罐中,然后装入箱式电炉中进行程序升温制得哑铃杠铃片；采用非铸造方式生产加工,耗能低,环保。所制备的哑铃杠铃片无毛刺,且易加工性强,产品质感好,喷涂效果好,涂料附着性好。所制成品的性能参数；抗拉强度150,硬度HBW120-180。制作成本每吨3000元,利润200元,日产50吨。(The invention relates to the field of production and processing of dumbbell barbells, in particular to a method for preparing a dumbbell disc from blast furnace ash iron oxide, which comprises the steps of preparing an initial blank of the dumbbell disc by calendering and molding at normal temperature in a mold, filling the initial blank of the dumbbell disc into a reduction tank, and then filling the reduction tank into a box-type electric furnace for carrying out temperature programming to prepare the dumbbell disc; the non-casting mode is adopted for production and processing, the energy consumption is low, and the environment is protected. The prepared dumbbell barbell disc has no burrs, and is easy to process, good in product texture, good in spraying effect and good in paint adhesion. Performance parameters of the finished product; tensile strength 150 and hardness HBW 120-180. The production cost is 3000 yuan per ton, the profit is 200 yuan, and the daily yield is 50 tons.)

1. A preparation method for manufacturing a dumbbell barbell disc by using blast furnace dust and iron oxide is characterized by comprising the following steps:

s1, mixing ingredients: mixing blast furnace ash iron oxide, regenerated metal powder and an auxiliary agent;

s2, rolling: placing the ingredients in the step S1 in a die, and performing calendaring molding at normal temperature to obtain a dumbbell disc initial blank;

s3, iron oxide reduction: loading the dumbbell bar-bell sheet initial blank into a reduction tank, and then loading into a box-type electric furnace for temperature programming to obtain the dumbbell bar-bell sheet;

s4, assembling: assembling the dumbbell barbell disc and the lever to obtain a dumbbell or barbell;

s5, hardcover: surface passivation treatment is carried out on the dumbbell or the barbell

S6, spraying: under the action of an electrostatic spraying machine, the coating is charged negatively in a powder mist form through corona discharge and flies to a grounded dumbbell or barbell under the action of compressed air and electrostatic field force, and a workpiece is uniformly sprayed and quickly cured by moving the position of a spray gun;

s7, curing: and curing and drying the sprayed dumbbell or barbell workpiece, and naturally cooling the dried dumbbell or barbell workpiece at normal temperature.

2. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: the mass ratio of the blast furnace ash ferric oxide to the regenerated metal powder to the auxiliary agent is 80: 19.95: 0.05.

3. the method for preparing dumbbell barbell disc from blast furnace dust iron oxide according to claim 1 or 2, which is characterized in that: the regenerated metal powder is iron powder.

4. The method for preparing dumbbell barbell disc from blast furnace dust iron oxide according to claim 1 or 2, which is characterized in that: the auxiliary agent is water glass.

5. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: the calendering pressure is 7t/cm²。

6. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: the program in step S3 is increased in temperature: keeping the temperature for one hour when the temperature reaches 1100 ℃, and discharging the furnace after the temperature is reduced to 700 ℃ by power failure.

7. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: and the passivation treatment adopts a passivating agent trivalent chromium passivating agent.

8. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: electrostatic spraying in the step S6: the spraying voltage is 40-90 kV, the humidity of a spraying chamber is RH 10% or less, the pressure of compressed air of an air compressor is 0.2-0.5 MPa, and the angle between a spray gun and a workpiece surface is 90 degrees and the distance is 20-35 cm.

9. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: the coating in the step S6 is water paint.

10. The method for preparing the dumbbell disc made of the blast furnace dust iron oxide according to claim 1, which is characterized in that: and in the step S7, curing and drying: curing at the temperature of 120-200 ℃ for 10-30 min.

Technical Field

The invention relates to the field of production and processing of dumbbell barbells, in particular to a preparation method for preparing dumbbell barbell pieces from blast furnace ash iron oxide.

Background

In the production and processing process of the barbell, the barbell disc and the lever are usually produced independently, in the process of producing the barbell disc, molding sand needs to be manufactured firstly, then casting molten iron is poured into the molding sand, and after the casting is cooled and molded, the molding sand and the casting are separated to obtain the casting. Molten iron needs to be poured into a mould in the manufacturing process, and the manufacturing process is complicated, high in energy consumption and unsafe.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a method for preparing a dumbbell barbell disc from blast furnace dust iron oxide.

A preparation method for manufacturing a dumbbell barbell disc by using blast furnace dust and iron oxide comprises the following steps:

s1, mixing ingredients: mixing blast furnace ash iron oxide, regenerated metal powder and an auxiliary agent; the blast furnace ash ferric oxide refers to ferric oxide obtained by treating and separating blast furnace ash;

s2, rolling: placing the ingredients in the step S1 in a die, and performing calendaring molding at normal temperature to obtain a dumbbell disc initial blank;

s3, iron oxide reduction: loading the dumbbell bar-bell sheet initial blank into a reduction tank, and then loading into a box-type electric furnace for temperature programming to obtain the dumbbell bar-bell sheet;

s4, assembling: assembling the dumbbell barbell disc and the lever to obtain a dumbbell or barbell;

s5, hardcover: surface passivation treatment is carried out on the dumbbell or the barbell

S6, spraying: under the action of an electrostatic spraying machine, the coating is charged negatively in a powder mist form through corona discharge and flies to a grounded dumbbell or barbell under the action of compressed air and electrostatic field force, and a workpiece is uniformly sprayed and quickly cured by moving the position of a spray gun;

s7, curing: and curing and drying the sprayed dumbbell or barbell workpiece, and naturally cooling the dried dumbbell or barbell workpiece at normal temperature.

Further, the mass ratio of the blast furnace ash ferric oxide to the regenerated metal powder to the auxiliary agent is 80: 19.95: 0.05.

further, the recycled metal powder is iron powder.

Further, the auxiliary agent is water glass.

Further, a passivating agent trivalent chromium passivating agent is adopted in the passivation treatment.

Further, the calendering pressure is 7t/cm²。

Further, the program in step S3 increases the temperature: keeping the temperature for one hour when the temperature reaches 1100 ℃, and discharging the furnace after the temperature is reduced to 700 ℃ by power failure.

Further, in the step S6, electrostatic spraying: the spraying voltage is 40-90 kV, the humidity of a spraying chamber is RH 10% or less, the pressure of compressed air of an air compressor is 0.2-0.5 MPa, and the angle between a spray gun and a workpiece surface is 90 degrees and the distance is 20-35 cm.

Further, the paint in step S6 is water paint.

Further, in the step S7, curing and drying: curing at the temperature of 120-200 ℃ for 10-30 min.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a preparation method for manufacturing a dumbbell barbell disc by using blast furnace dust iron oxide, which is characterized in that the iron oxide is reduced after being rolled at normal temperature, and the dumbbell disc is produced and processed in a non-casting mode, so that the dumbbell disc is low in energy consumption and environment-friendly. The prepared dumbbell barbell disc has no burrs, and is easy to process, good in product texture, good in spraying effect and good in paint adhesion. Performance parameters of the finished product; tensile strength 150 and hardness HBW 120-180. The production cost is 3000 yuan per ton, the profit is 200 yuan, and the daily yield is 50 tons.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A preparation method for manufacturing a dumbbell barbell disc by using blast furnace dust and iron oxide comprises the following steps:

s1, mixing ingredients: mixing blast furnace ash iron oxide, regenerated metal powder and an auxiliary agent; the mass ratio of the blast furnace ash ferric oxide to the regenerated metal powder to the auxiliary agent is 80: 19.95: 0.05; the regenerated metal powder is iron powder; the auxiliary agent is water glass;

s2, rolling: placing the ingredients in the step S1 in a die, and performing calendaring molding at normal temperature to obtain a dumbbell disc initial blank; the calendering pressure is 7t/cm²；

S3, iron oxide reduction: loading the dumbbell bar-bell sheet initial blank into a reduction tank, and then loading into a box-type electric furnace for temperature programming to obtain the dumbbell bar-bell sheet; the temperature programming is as follows: keeping the temperature for one hour when the temperature reaches 1100 ℃, and discharging the furnace after the temperature is reduced to 700 ℃ by power failure;

s4, assembling: assembling the dumbbell barbell disc and the lever to obtain a dumbbell or barbell;

s5, hardcover: carrying out surface oil removal and passivation treatment on the dumbbell or the barbell; the passivation treatment adopts a passivating agent trivalent chromium passivating agent;

s6, spraying: under the action of an electrostatic spraying machine, coating-water paint is charged negatively in a powder mist form through corona discharge and flies to a grounded dumbbell or barbell under the action of compressed air and electrostatic field force, and a workpiece is uniformly sprayed and quickly cured by moving a spray gun; the electrostatic spraying is as follows: spraying voltage is 40-90 kV, humidity of a spraying chamber is below RH 10%, compressed air pressure of an air compressor is 0.2-0.5 MPa, a spray gun and a workpiece surface form an angle of 90 degrees, and the distance is 20-35 cm;

s7, curing: curing and drying the sprayed dumbbell or barbell workpiece at the drying temperature of 200-220 ℃; naturally cooling the dried dumbbell or barbell workpiece at normal temperature; the curing and drying are as follows: curing at the temperature of 120-200 ℃ for 10-30 min.

Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.