Process Engineering

Selective soldering is how high-mix EMS factories stop paying for hand-soldered THT joints. The SL-600 is Southern Machinery's compact mini selective soldering machine: one motion platform that performs selective fluxing and selective soldering on a fixed PCB, with PC recipe control, upper and bottom IR preheat, a 15 kg titanium solder pot, N2 inline heating and optional SMEMA online transport. This guide covers what the machine is used for, how it slots into a complete PCB assembly line, the specifications Southern Machinery publishes, the parameters a buyer must confirm before ordering, and the quality and ROI case for automating selective soldering on power supply, appliance, LED, automotive and industrial control boards.

Moisture and internal stress damage bare PCBs before they reach the line. Verified baking temperatures, storage windows and stacking rules for SMT assembly.

The S-P500 Automatic Spray Fluxing System applies flux ahead of the Wave Soldering preheat zone, with twin atomising Nozzles and over 40% lower air use.

The S-8800 lead-free Reflow Oven is Southern Machinery's high-end reflow platform for SMT lines running lead-free alloys. This guide explains what the S-8800 is used for, the process reality that decides whether a reflow oven is good enough, how the machine drops into a complete PCB assembly line, and the parameters an EMS or OEM buying team should confirm before specifying. It also states plainly which figures Southern Machinery does and does not publish for this model, so your team can request exactly the right data for a defensible capital-equipment decision.

PCB strain is one of the quietest causes of field failure in modern electronics: a BGA ball or MLCC that cracked during depaneling, press-fit, screw fastening or board handling can pass every SPI and AOI check, then fail months later. The SDL-1000 PCB Strain Measurement Device makes that invisible risk measurable. Southern Machinery supplies the SDL series alongside its SMT, THT, Wave Soldering, board handling, cleaning and inspection equipment, so strain data can be collected where the stress is actually created - on your line, on your boards. This guide explains what the device is used for, where it fits in a complete PCB assembly line, which parameters to confirm before you buy, and how to justify a strain measurement program on quality and ROI.

A step-by-step service guide to removing, disassembling and rebuilding a THT auto insertion head, with the full parts, lubricants and setup checks.

Vacuum seal packaging is the last protective step in PCB assembly - the stage that keeps a finished PCBA, a reel of moisture-sensitive components or a medical assembly free of humidity, dust and handling damage during storage and export. The S-500S External Vacuum Seal Packaging Machine from Southern Machinery is a fully automatic, tabletop vacuum sealer built for electronics manufacturing: 3-10 bags per minute, a 500 mm maximum sealing width, unlimited product length, -0.1 MPa ultimate vacuum and a customizable gas-filling function, all on a single 220V supply with no external gas source required. This guide explains what the machine does, where it fits at the end of an SMT/THT line, which parameters to confirm before you buy, and how to calculate the return.

Solder dross and tin slag are the line items nobody forecasts - yet on a busy THT line they consume solder metal, machine uptime and engineer attention every shift. This guide from Southern Machinery explains what solder dross is, where it costs EMS and OEM plants money, and which solder pot and wave soldering machine parameters actually control it. It covers stand-by wave modes that reduce dross generation, nitrogen capability, pot material and capacity, temperature control precision, alloy change-over, and the consumable cost discipline that pays for itself. Includes published specifications for the S-SW450, S-WS450, S-WS250, S-WS350B and Mini Waver, plus a buyer selection checklist and FAQs.

The S120 wave unloader takes PCBA off the wave soldering exit and feeds the next machine automatically, so boards stop being moved by hand after soldering.

Validate Reflow Oven and Wave Soldering profiles with a 12-channel thermal profiler. Southern Machinery specifies the KIC Slim 2000 profiler for PCBA lines.

SMT glue printing and adhesive dispensing hold bottom-side SMDs in place through wave soldering. Learn the dot, stencil, and cure parameters that decide yield.

Wave soldering machine setup and preventive maintenance for THT assembly lines: conveyor alignment, flux spray tank, solder pot and the daily care checks.

Solder paste is the most process-sensitive material on an SMT line, yet it is often mixed by hand with a spatula. The S-PM680 Touch Screen Solder Paste Mixer from Southern Machinery turns paste preparation into a controlled process step, with digital speed and time settings, selectable positive, negative and alternating rotation modes, intelligent diagnostics and interlocked safety. This guide covers what the machine does, the bridging and voiding defects that inconsistent manual mixing causes, where it fits in a complete SMT and THT line, how it compares with the S-SPM01, S-PM800 and S-SPW01, and the parameters buyers should confirm before specifying one.

A horizontal insertion machine places axial components flat on the board. Here is how a dry run test verifies THT production readiness before ramp-up.

Learn when and how to calibrate the vision camera on Southern Machinery's terminal insertion machines to protect placement accuracy and yield.

Keep radial insertion machines accurate and profitable with a monthly preventive maintenance checklist, sticky pusher repair and Southern Machinery spare parts.

Odd form insertion machine programming explained: nozzle data, PCB mark points, insert teaching and pickup positions, from Southern Machinery training.

Replace worn squeegees with stainless steel SMT solder paste blades from Southern Machinery. DEK-compatible 400 mm steel blade in 45° or 60° angle.

Measure stencil mesh tension before printing to prevent paste defects. Southern Machinery's mesh tension meter stabilizes SMT print quality for EMS lines.

Remove flux residue from assembled PCBAs with the SME-350MB inline semi-aqueous cleaning machine from Southern Machinery. Conveyor-type, 350mm width.

Remove flux residue from assembled PCBAs with the SME-350MB inline semi-aqueous cleaning machine from Southern Machinery. Conveyor-type, 350mm width.

The SME6200 inline PCBA cleaning machine washes, rinses, and dries circuit boards after reflow or wave soldering, removing flux residue for high-reliability PCB assembly.

SPI, AOI, X-ray and component counting: which PCB inspection method catches which defects, and how inspection machines fit into SMT and THT lines.

Southern Machinery's selective conformal coating machine applies three-proof coating with repeatable film thickness for EMS and automotive PCBA protection.

Southern Machinery S-A300/S-B400 solder robots automate THT touch-up, spot welding and multi-point soldering for EMS, power, LED and automotive PCB assembly.

Southern Machinery's AI insertion machine upgrade finishes a computing PCBA in 29 seconds with automatic loading, cutting labor and improving EMS throughput.

Southern Machinery S580 strain gauge and SDL series PCB strain measurement device quantify board stress to prevent solder joint cracks in SMT assembly.

Southern Machinery SP-830-A solder paste stencil printer: program parameters once, get repeatable paste deposition for EMS, LED, and automotive PCBs.

The SME-5200 Aqueous Pallet Cleaning System automates wash, rinse and dry cycles for wave solder pallets, reflow fixtures and carriers. Remove flux, grease and dust without hazardous solvents, cut rework, and keep THT tooling rotating through your line.

Automate SMT stencil cleaning with the SME800 electric stencil cleaning machine. Clean solder paste stencils, red glue stencils, and misprinted PCBs in a controlled, repeatable process. Built for EMS factories that need