JP3039072U - Continuous pickling equipment - Google Patents

Abstract

(57) [Abstract] (Corrected) [PROBLEMS] To provide a continuous pickling apparatus. SOLUTION: A main pipe 2 for continuously receiving and falling metal balls 1 in a red hot state and an inclined pipe 4 composed of a branch pipe 3 for injecting an acid liquid onto the metal balls 1 are provided between a hot forming device and a pickling device. Set up.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a continuous pickling device that is placed in front of a conventional pickling device to remove surface oxide films formed on metal balls, which are continuously fed from a hot forming device such as a rolling machine, and especially on copper balls for plating. .

[0002]

[Prior art]

 Copper balls for plating are made from a red hot state by hot forming a copper rod with a press or rolling machine, but since the surface oxide film generated during cooling is removed before plating, the balls in the red hot state are kept at room temperature. It was cooled to 80 ° C and kept in a 4% sulfuric acid solution at 80 ° C for about 40 minutes. However, if the acid treatment time is long and the oxide film is not removed sufficiently, the surface condition of the ball will not be stable. There was a quality issue with regards to being used for plating.

[0003]

[Problems to be solved by the device]

 In view of the above problems, the present invention has been made as a result of various studies for the purpose of reducing pickling treatment time, effectively utilizing heat energy of balls, and stabilizing quality.

[0004]

[Means for Solving the Problems]

 The present invention comprises a main pipe 2 for continuously receiving and falling a red-hot metal ball 1 at about 600 to 700 ° C., and an inclined pipe 4 composed of a branch pipe 3 for injecting an acid solution onto the metal ball 1 as a hot forming device. The gist of the present invention is a continuous pickling device that is provided between the pickling devices.

Hereinafter, the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the pickling apparatus of the present invention is a conventional hot forming apparatus, for example, about 700 to 800 immediately after hot forming which is continuously delivered from a rolling machine 5 via a sorting conveyor 6. It is a main pipe 2 that continuously receives copper balls 1 that are in a red-hot state at ℃, and an inclined pipe 4 that is a branch pipe 3 that sprays approximately 4% sulfuric acid liquid onto the copper balls 1. It is inclined at an angle, its diameter is φ100 mm, and its length is 400 cm, and it is suitable that the diameter of the branch pipe 3 is φ50 mm, and like the main pipe 2, it is inclined at an angle of 45 °.

The copper ball 1 having a diameter of 27 to 55 mm is rapidly cooled by being sprayed with an acid solution having a concentration of about 4% and a temperature of about 30 ° C. from the branch pipe 3 within about 5 seconds of passing through the main pipe 2 while rolling down. To be done. As a result, the oxide film on the surface of the copper ball is simultaneously peeled off and washed with sulfuric acid due to the difference in shrinkage between pure copper and copper oxide, and a pure copper ball with a beautiful surface is obtained. Due to heat exchange with the liquid jet flow, it drops rapidly within a few seconds and reaches room temperature.

Conventionally, when a ball around 800 ° C. is water-cooled, water vapor adheres to the surface, cooling time becomes long, and pickling time is extra, which makes it difficult to remove the film. Such disadvantages are completely eliminated.

As shown in the figure, the ball after the treatment of the inclined pipe is sent to the screw conveyor 7 and the roller conveyor of the conventional pickling device, and is subjected to the first washing, the second washing, and the hot water washing. After passing sequentially, the water is drained, dried and then sent to the next packing process.

The present invention is not only continuous work for the purpose of rationalization, but it is also excellent in safety because the process can be advanced only by monitoring check without directly touching the acid solution in order to guarantee the safety of the operator. And is highly desirable industrially.

[0010]

[Embodiment of the invention]

 The inclined pipe 4 shown in FIG. 1 is installed between the hot forming device and the pickling device, and the copper balls coming out of the ball forming machine are continuously fed into the inclined pipe for acid treatment.

[0011]

Example A copper ball 1 having a diameter of 55 mm, which has come out of a rolling machine, is passed through a main pipe 2 of an inclined pipe 4 and passed therethrough, and a sulfuric acid concentration of about 4% and an acid of about 30 ° C. are supplied from a branch pipe 3 in about 5 seconds. When the solution was jet-jetted and rapidly cooled, the oxide film on the surface of the copper ball peeled off, and at the same time as pickling, a ball with a beautiful surface of pure copper was obtained. After the second washing with water, washing with hot water, and drying, about 3 tons of treatment could be performed per hour, and it could be sent to the packaging work of the next step.

[0012]

[Effect of the invention]

 The apparatus of the present invention requires about 40 minutes for pickling, but only about 5 seconds, so rapid continuous pickling is possible, which is extremely efficient. In addition, unmanned continuous work that integrates the copper ball manufacturing process is possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outline of steps of a continuous pickling apparatus of the present invention.

[Explanation of symbols] 1 metal ball 2 main pipe 3 branch pipe 4 inclined pipe 5 rolling machine 6 sorting conveyor 7 screw conveyor 8 water washing / hot water washing / drying process

Claims (1)

[Utility model registration claims] 1. An inclined pipe 4 comprising a main pipe 2 for continuously receiving and falling metal balls 1 in a red-hot state and a branch pipe 3 for injecting an acid solution onto the metal balls 1 between a hot forming device and a pickling device. A continuous pickling device, which is provided in the.