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PCB circuit board drilling needle and drilling process effect detection method

A PCB circuit board and detection method technology, which is applied in the field of drill pins, can solve the problems of increased manufacturing costs of multi-layer circuit boards, increased consumption costs of micro-drill pins, and affecting cutting accuracy, so as to improve detection accuracy, eliminate chance, The effect of prolonging the service life

Active Publication Date: 2021-03-02
信泰电子(西安)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional small drills with a diameter of more than 0.3mm are generally coated with a film layer, while micro drills with a diameter of less than 0.3mm are generally made of tungsten carbide powder as a matrix, cobalt powder as a binder, and are pressurized and sintered. There is no film layer. Therefore, the service life of the micro-drill is generally 2200 times. When the micro-drill has been drilled for a certain number of operations, it will be passivated and affect the cutting accuracy, or wear and deformation will occur. The service life of the microdrill will directly increase the consumable cost of the microdrill, and the increase in the consumable cost of the microdrill will increase the manufacturing cost of the multilayer circuit board

Method used

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  • PCB circuit board drilling needle and drilling process effect detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1: Drill the PCB circuit board for a specified number of times through the above-mentioned drilling of a micro-drilling needle with a diameter of 0.2mm coated with a film layer comprising a mixture of titanium nitride, titanium carbide, aluminum oxide and titanium carbonitride, ( The number specified here is the maximum number of holes to be drilled within the expected lifespan of the drilling needle, such as 4400 times);

[0040] S2: Carry out copper plating on the PCB circuit board after the Drill operation;

[0041] S3: slice and sample the PCB circuit board after copper plating;

[0042] S4: hot oil, specifically including:

[0043] S41: Bake the PCB circuit board sample in an oven at 120°C for 40 minutes;

[0044] S42: Adjust the temperature of the hot oil furnace to 257°C, and when the temperature is reached, immerse the PCB circuit board sample in the hot oil furnace for 20 seconds;

[0045] S43: Measure the hole wall through a microscope to detect whether th...

Embodiment 2

[0047] S1: Drill the PCB circuit board for a specified number of times through the drilling of a micro-drilling needle with a diameter of 0.2mm coated with a film layer of a mixture of titanium carbide and aluminum nitride titanium, (the specified number here is the expected drilling hole The maximum number of holes drilled within the useful life of the needle, such as 4400 times);

[0048] S2: Carry out copper plating on the PCB circuit board after the Drill operation;

[0049] S3: slice and sample the PCB circuit board after copper plating;

[0050] S4: hot oil, specifically including:

[0051] S41: Bake the PCB circuit board sample in an oven at 150°C for 80 minutes;

[0052] S42: Adjust the temperature of the hot oil furnace to 266°C, and when the temperature is reached, immerse the PCB circuit board sample in the hot oil furnace for 21 seconds;

[0053] S43: Measure the hole wall through a microscope to detect whether the PCB circuit board has white spots, blisters, an...

Embodiment 3

[0055] S1: Drill the PCB circuit board for a specified number of times through the drilling of the above-mentioned micro-drilling needle with a diameter of 0.2mm coated with an aluminum carbonitride film layer, (here the specified number is the expected drilling needle in the effective life period The maximum number of drilling holes, such as 4400 times);

[0056] S2: Carry out copper plating on the PCB circuit board after the Drill operation;

[0057] S3: slice and sample the PCB circuit board after copper plating;

[0058] S4: hot oil, specifically including:

[0059] S41: Bake the PCB circuit board sample in an oven at 135°C for 60 minutes;

[0060] S42: Adjust the temperature of the hot oil furnace to 260°C, and when the temperature reaches the temperature, immerse the PCB circuit board sample in the hot oil furnace for 20s;

[0061] S43: Measure the hole wall through a microscope to detect whether the PCB circuit board has white spots, blisters, and delamination on the...

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Abstract

The invention relates to the technical field of drill pins, in particular to a PCB circuit board drill pin and a method for detecting the effect of a drilling process, comprising a handle and a tungsten carbide blade connected to the handle, the tungsten carbide blade contains cobalt metal, Wherein, the diameter of the tungsten carbide blade is 0.2 mm, and the outer layer of the tungsten carbide blade is provided with several film layers, and the material of the film layer is a mixture of titanium nitride, titanium carbide, aluminum oxide and titanium carbonitride , or a mixture of titanium carbide and aluminum titanium nitride, or aluminum titanium carbonitride. A film layer of one or more combinations of titanium nitride, titanium carbide, aluminum oxide, titanium carbonitride, aluminum titanium nitride, and aluminum titanium carbonitride is coated on a micro-drilling needle with a diameter of 0.2 mm. The rigidity of the drilling needle is enhanced, the service life is extended to twice that of the traditional micro-drilling needle, and the manufacturing cost of the multilayer circuit board is reduced.

Description

technical field [0001] The invention relates to the technical field of drill pins, in particular to a PCB circuit board drill pin and a method for detecting the effect of the drilling process. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. [0003] Drilling needles are needed in the production of PCB boards. Small drilling needles with a diameter of less than 0.6mm are called small drilling needles, and micro-drilling needles with a diameter of less than 0.3mm are called micro-drilling needles. Due to the requirement of precision, micro drills are usually used for drilling. [0004] Traditional small drills with a diameter of more than 0.3mm are generally coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/00G01B11/00G01B11/30G01N21/88
CPCG01B11/00G01B11/002G01B11/30G01N21/88H05K3/0047
Inventor 宋改丽蔡少华李小冬周俊杰朴炫昌
Owner 信泰电子(西安)有限公司