Etching is an important process in the printed circuit board (PCB), photovoltaic, and semiconductor industries. During the etching process, etchant is used to remove unwanted copper and form the desired circuit patterns. Etchant usually has strong corrosiveness, so the pump used to transport etchant must have good corrosion resistance. Magnetic pumps are highly corrosion-resistant pumps widely used in etching processes.
Overview of PCB Etching
PCB etching removes extra copper, leaving only the desired circuit patterns on the surface. This can be done using wet or dry methods. Wet etching typically uses acidic or alkaline chemicals, while dry etching uses plasma or laser techniques.
Dry Etching
Plasma etching: Uses plasma to activate chemical reactions, high-speed glow discharge dissolves unwanted copper. It is a dry, clean process but has a higher cost. Laser etching: Uses high-power laser to engrave traces on the PCB without chemicals, but uniform etching on large boards may be difficult.
Wet Etching
Acid etching: Used for inner-layer PCBs using ferric chloride or cupric chloride. Acid etching takes more time but allows precise control of the etching rate. Alkaline etching: Used for outer-layer PCBs, it is a fast, economical and efficient etching method typically done in a high-pressure spray chamber.
Advantages of Magnetic Pumps in Etching
The main advantages of magnetic pumps in etching are:
- Strong corrosion resistance: Magnetic pump seals use non-metallic materials with excellent corrosion resistance. Thus, magnetic pumps can safely transport various corrosive etchants without damage.
- Good sealing: Magnetic pumps incorporate a state-of-the-art magnetically coupled sealing mechanism, ensuring superior seal integrity.
- Stable operation: Magnetic pumps use seal-less operation, resulting in more stable runs.
Application Scenarios of Magnetic Pumps in Etching
- Etchant circulating filtration: Magnetic pumps can be used for circulating and filtering etchant to ensure temperature and concentration uniformity.
- Hot water injection and spraying: Magnetic pumps can be used for hot water injection and spraying to clean etched workpieces.
The MD series is an anti-corrosion magnetic pump with the following features:
- Low Power Consumption: Adopting magnetic coupling drive technology, which reduces mechanical friction and lowers power consumption.
- Anti-corrosion: Made of corrosion-resistant materials, suitable for a variety of acid and alkali corrosive chemical liquids.
- No mechanical seal design: Canceled the mechanical seal, realizing zero leakage.
- Small volume: Compact size, easy to install.
- Low installation environment requirements: Low installation environment requirements, suitable for a variety of occasions.
- Applicable to occasions with low water flow: Applicable to occasions with low water flow.
The features of the MD series give it the following advantages:
- Energy saving: Low power consumption saves energy.
- Safe and reliable: No mechanical seal design, realizing zero leakage, more safe and reliable.
- Widely applicable: Suitable for all kinds of acid and alkali corrosive chemical liquids, wider range of applications.
- Convenient installation: Compact size, easy to install.
- Strong adaptability: Low requirements for the installation environment, suitable for a variety of occasions.
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QEEHUA QHX series is a new type of corrosion-resistant magnetic drive pump with the following features:
- New flow channel design: The flow channel design is more reasonable, with larger flow rate and higher efficiency.
- No mechanical seal design: Adopting magnetic coupling drive technology, the mechanical seal is canceled and zero leakage is realized.
- Corrosion resistance: Made of corrosion-resistant materials, suitable for all kinds of acid and alkali corrosive chemical liquids.
The features of QHX series make it have the following advantages:
- High efficiency: Higher flow rate, higher efficiency and energy saving.
- High head: Higher head, suitable for higher conveying height.
- Zero Leakage: Zero leakage is realized, which is safer and more reliable.
- Widely applicable: It is suitable for all kinds of acid and alkali corrosive chemical liquids, with a wider range of applications.
QHX series have a variety of materials to choose from, including:
- GFRPP: Good corrosion and abrasion resistance, suitable for general acid and alkali corrosive chemical liquids.
- PVDF: with stronger corrosion resistance and high temperature resistance, suitable for high temperature and high concentration of acid and alkali corrosive chemical liquids.
QHX series is a corrosion resistant magnetic drive pump with excellent performance and wide applicability, which is widely used in many industries.
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QHA series strong acid and alkali resistant chemical vertical centrifugal pumps have the following features:
- Strong corrosion resistance: The pump body is made of PP or PVDF corrosion-resistant materials, and the motor shaft can be made of stainless steel or titanium, which is suitable for circulating and conveying all acid and alkali chemical solutions.
- Convenient installation: Mainly used for installation in tanks, convenient for piping and maintenance.
- Safe and reliable: It can keep running dry for 24 hours and will never be damaged due to dry running.
The characteristics of the QHA series give it the following advantages:
- Widely applicable: Suitable for circulating all acid and alkali chemical solutions.
- Easy to install: Mainly used for installation in tanks, easy for piping and maintenance.
- Safe and reliable: It can run dry for 24 hours and will never be damaged due to dry running.
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QHD series acid and alkali resistant vertical centrifugal pumps have the following features:
- Strong corrosion resistance: The pump body is made of corrosion-resistant materials, and the motor shaft can be made of stainless steel or titanium, which is suitable for circulating or conveying all kinds of corrosive chemical liquids at high and low temperatures.
- Convenient Installation: It is mostly used for external tank installation, piping and maintenance are very convenient.
- Safe and reliable: It can run dry for 24 hours and will never be damaged due to dry running.
The characteristics of QHD series make it has the following advantages:
- Widely applicable: Suitable for circulation or transportation of various high and low temperature corrosive chemical liquids.
- Easy to install: Mostly used in external tank installation, piping and maintenance are very convenient.
- Safe and reliable: It can run dry for 24 hours and will never be damaged due to dry running.
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QEEHUA PUMP Applications in Etching
QEEHUA PUMP is a leading and reliable manufacturer of chemical pumps and chemical pump filters. Their products have wide applications in etching. QEEHUA PUMP magnetic pumps have excellent corrosion resistance and can transport various corrosive etchants. Their pumps also have good sealing and stable operation to meet etching process requirements.
Typical QEEHUA PUMP applications in etching include:
- PCB etchant circulating filtration: Their magnetic pumps are used for circulating and filtering PCB etchant.
- Photovoltaic cell etchant circulating filtration: Their magnetic pumps are used for circulating and filtering photovoltaic cell etchant.
- Semiconductor etchant circulating filtration: Their magnetic pumps are used for circulating and filtering semiconductor etchant.
QEEHUA PUMP: A Reliable Magnetic Pump Manufacturer
QEEHUA PUMP is a leading manufacturer of chemical pumps and chemical pump filters. Their core products include magnet drive pumps, mechanical seal centrifugal pumps, vertical pumps, and chemical pump filters. They have obtained certifications such as ISO9001, ISO14001, CE, SGS, etc.
QEEHUA PUMP has a high-caliber pre-sales and after-sales engineering team serving over 10,000 customers in more than 30 countries. Their products are widely used in industries such as PCB, electroplating, coatings, surface treatment, semiconductors, chemical and pharmaceutical, exhaust and wastewater treatment, liquid flow energy storage, and photovoltaics.
With many core patented technologies, QEEHUA PUMP has solved issues in chemical pump series such as leakage, corrosion, slow heat dissipation, cracking, bubbles and damage. Adopting injection molding technology keeps their products at the forefront in performance and quality. Choosing QEEHUA PUMP is a wise decision for reliability and efficiency in PCB etching processes.
