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Preparation equipment and method of ball-point pen wear-resistant metal bead

A wear-resistant metal and ballpoint pen technology, which is applied in metal processing equipment, metal material coating technology, coating, etc., can solve the problems of production efficiency and investment relative cost difference

Inactive Publication Date: 2018-04-13
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limited by precision requirements, general manufacturing technology needs to be matched with expensive automatic machining equipment, and the processing capacity is accumulated on an individual basis, and the production efficiency is relatively poor compared to the investment.

Method used

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  • Preparation equipment and method of ball-point pen wear-resistant metal bead
  • Preparation equipment and method of ball-point pen wear-resistant metal bead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The method for preparing the wear-resistant metal ball of a ballpoint pen by utilizing the above-mentioned equipment comprises the following steps:

[0029] Step 1, adjust the proportion of the atomization atmosphere in the rotary electrode atomization device 1, using Ar / He / N 2 Ternary mixed gas, the He content is controlled at 50%; for stainless steel materials, N 2 The content of 10%, for other metal materials, N 2 It can be controlled at 18%; the rest of the atmosphere is Ar, and the total filling pressure is kept at 1bar;

[0030] Step 2, use the electrode rod 2 of 17-4PH steel for plasma rotary electrode atomization, adjust the rotation speed of the electrode rod 2 to 1000rpm, use a rod with a diameter of 50mm, and obtain a spherical metal powder with a main particle size of 1mm;

[0031] Step 3, use laser punching round hole metal plate sieve 1 3, round hole metal plate sieve 2 4 to sieve the collected powder; the hole diameter difference between round hole meta...

Embodiment 2

[0035] The method for preparing the wear-resistant metal ball of a ballpoint pen by utilizing the above-mentioned equipment comprises the following steps:

[0036] Step 1, adjust the proportion of the atomization atmosphere in the rotary electrode atomization device 1, using Ar / He / N 2 For ternary mixed gas, the content of He is controlled at 70%; for stainless steel, N 2 The content is 30%, for other metal materials, N 2 It can be controlled at 10%; the rest of the atmosphere is Ar, and the total filling pressure is kept at 3bar;

[0037] Step 2, use the electrode rod 2 of 304 steel for plasma rotary electrode atomization, adjust the rotation speed of the electrode rod 2 to 5000rpm, use a rod with a diameter of 50mm, and obtain a spherical metal powder with a main particle size of 0.55mm;

[0038] Step 3, use laser punching round hole metal sieve 1 3 and round hole metal sieve 2 4 to sieve the collected powder; the hole diameter difference between round hole metal sieve 1 3 ...

Embodiment 3

[0042] The method for preparing the wear-resistant metal ball of a ballpoint pen by utilizing the above-mentioned equipment comprises the following steps:

[0043] Step 1, adjust the proportion of the atomization atmosphere in the rotary electrode atomization device 1, using Ar / He / N 2 For ternary mixed gas, the content of He is controlled at 60%; for stainless steel, N 2 The content of 20%, for other metal materials, N 2 It can be controlled at 15%; the rest of the atmosphere is Ar, and the total filling pressure is kept at 2bar;

[0044] Step 2, use the electrode rod 2 of 316L steel for plasma rotary electrode atomization, adjust the rotation speed of the electrode rod 2 to 2500rpm, and use a rod with a diameter of 50mm, so that the main particle size range of the collected powder is concentrated at 0.85mm;

[0045] Step 3, use laser punching round hole metal plate sieve 1 3, round hole metal plate sieve 2 4 to sieve the collected powder; the hole diameter difference betwee...

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Abstract

Preparation equipment of a ball-point pen wear-resistant metal bead comprises a plasma rotary electrode centrifugal atomizing device, and a spherical metal powder box is arranged on the lower portionof a conical head at the bottom of the plasma rotary electrode centrifugal atomizing device; the middle of the plasma rotary electrode centrifugal atomizing device is provided with a feed inlet for installing a rod material; a first round hole metal plate screen and a second round hole metal plate screen are arranged in the spherical metal powder box; an above-screen powder outlet pipe is arrangedat the position, on one side of the spherical metal powder box, on the upper side of the first round hole metal plate screen; a target powder outlet pipe is arranged at the position, on one side of the spherical metal powder box, on the upper side of the second round hole metal plate screen. A preparation method includes the steps that firstly, the pulverizing and atomizing atmosphere proportionof a rotary electrode atomizing device 1 is adjusted, and Ar / He / N2 ternary mixed gas is used; secondly, an electrode bar made of stainless steel or other metal materials is used for plasma rotary electrode atomizing, wherein the particle size of spherical metal powder is 0.55-1 mm; thirdly, lasers are used for punching the first round hole metal plate screen and the second round hole metal plate screen for screening the collected powder. The preparation equipment has the advantages of being simple in structure, high in productivity and low in cost.

Description

technical field [0001] The invention belongs to the technical field of precision machining, and in particular relates to a preparation device and method for a wear-resistant metal ball of a ballpoint pen. Background technique [0002] Metal balls for ballpoint pens are relatively precise parts that require high sphericity to meet smooth writing requirements. At the same time, there are certain requirements for surface roughness, that is, it should not be too smooth to cause broken writing, and it should not be too rough Difficult to use smoothly. And the metal ball needs to have a certain corrosion resistance and wear resistance, so as to avoid failure due to corrosion and wear too quickly during normal use. Commonly used ballpoint pen tip materials are brass, stainless steel and carbide powder. Brass and stainless steel balls usually need to go through a more complicated cutting process, so the output is limited, and the requirements for automation equipment are high. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/00C23C8/26
CPCC23C8/26B22F9/14B22F2999/00B22F1/065B22F1/14B22F2201/10B22F2201/02
Inventor 刘洋韩志宇闫飞陈小林王庆相梁书锦
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
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