What factors can affect the quality of PCBA wave soldering?

 Wave soldering is a welding method in PCBA processing, mainly used for plug-in and mixed assembly processes. The final soldering quality in wave soldering is affected by factors such as wave soldering equipment, soldering materials, and PCB boards. Let's take a detailed look:

一、Wave Soldering Equipment Factors

Equipment issues are one of the main factors affecting wave soldering quality, primarily including:

  1. Flux spraying: Timely clean and replace the flux nozzle, and reasonably set the spraying time to avoid uneven flux application, which can cause soldering defects.
  2. Temperature control in heating zones: Wave soldering typically has four zones (preheating, heating-up, high-temperature, and cooling). Each zone requires precise temperature and time settings to prevent issues like solder splashing.
  3. Conveyor stability: A stable conveyor ensures consistent component positioning during soldering.

二、Soldering Material Factors

  1. Solder materials: Wave soldering uses solder bars (different from reflow soldering). The composition ratio and impurity content of solder bars directly impact soldering quality.
  2. Flux performance: Inadequate flux activity reduces solder wettability and fails to clean the soldering surface, leading to issues like incomplete solder joints.

三、Component and PCB Factors

  1. Component defects: Oxidized or oil-contaminated leads/plating can cause cold soldering.
  2. PCB issues: Oxidized pads, uneven board surfaces, or moisture absorption from improper storage will result in soldering defects (e.g., cold joints, solder balls, voids).

Additional factors: PCB design (e.g., pad spacing) and production process flaws also influence soldering quality. Controlling these aspects ensures high-quality wave soldering in PCBA manufacturing.

Want to know more? Contact me at sales9@hitechpcb.com. From Sandy



Comments

Post a Comment

Popular posts from this blog

How to choose SMT Assembly services in China?

  SMT Assembly services represent a crucial direction for the transformation of Chinese factories. This is largely attributed to the booming global electronics manufacturing industry and the upgrading demands of the Chinese manufacturing sector. As electronic products become smaller and more high-performance, surface mount technology (SMT), as the core process of electronic assembly, can efficiently achieve high-density mounting of components, enhancing production efficiency and product quality. Chinese factories, leveraging their well-established supply chains, cost advantages, and policy support, are actively embracing this trend to strengthen their international competitiveness. The following analysis explores the driving forces behind this transformation from two key aspects. Hitech Circuits Co., Limiteds is a wоrld-lеаding PCB Manufacturing & PCB Assembly company with more than 20 years experience in the electronics manufacturing industry. We focus on PCB Design,...
Read more

How is the cost of SMT patch soldering calculated

The calculation of SMT patching prices is now almost transparent, and the algorithm for determining the cost per point is straightforward. However, it is first necessary to clarify the concept of "point". Different companies adopt varying algorithms, but for a PCB board, the total cost of SMT patching processing remains consistent. The core of SMT patching processing is to mount surface - mount components onto the solder pads of a PCB. Some companies count one solder pad as one point, while others consider two solder pads as one point. In this article, we take the example of calculating one point per solder pad. It only requires calculating all the solder pads on the PCB board. However, for some special components such as inductors, large capacitors, ICs, etc., additional calculations are needed. The specific empirical methods are as follows: for example, an inductor can be counted as 10 points, and an IC is calculated as half the number of pins (for example, a 40 - pin IC is...
Read more

When Choosing a Controller Circuit Board Manufacturer, These 3 Types of Certifications Are Indispensable

  In the field of electronic manufacturing, selecting a suitable controller circuit board manufacturer is one of the key steps to ensure product quality and meet customer needs. As the market becomes increasingly competitive and consumers demand higher performance from electronic products, suppliers must pass a series of rigorous certifications to demonstrate the reliability and advanced nature of their products. This article will explore in depth which certifications are essential when choosing a controller circuit board manufacturer, and how these certifications can help enterprises stand out in the market. 1. International Quality System Certification A qualified controller circuit board manufacturer must hold the ISO 9001 Quality Management System certification. This certification standard, developed by the International Organization for Standardization (ISO), aims to help organizations establish and improve their quality management systems to meet customer requirements and exp...
Read more