Midas – Hot Gas Rework System
The HGRS-V is a highly adaptable dual-jet “thermal workbench” with a comprehensive suite of circuit-protective features. It’s the ideal solution for those facing a variety of rework tasks involving large die, eutectic attach, double-sided devices or other assemblies with tight thermal constraints.
The rapid, high temperature pinpoint die removal process Midas pioneered over three decades ago is still the best for advanced epoxy and eutectic rework applications.
Key Features
- Rapid, High-Temperature Gas Jets: Equipped with proprietary ceramic heater jets that achieve temperatures up to 750°C within seconds, enabling swift weakening of attach materials like epoxies and solders.
- Precise Gas Targeting: Features easily changeable nozzles (ranging from 0.02″ to 0.24″) and fully adjustable positioners, allowing users to create controlled thermal footprints that focus on target components while avoiding overheating adjacent areas.
- Integrated Protective Systems: Includes device cooling, nitrogen flooding, and maximum temperature protection capabilities, which can be combined into sophisticated application solutions for complex component removal challenges.
- Versatile Workholding and Heating: Comes with a preheated workholder featuring a spring-loaded pin grid and adjustable backstop, accommodating various substrates and modules while preventing thermal shock and reducing heat loss.
- Built-in Shear System: Incorporates a shear mechanism with a range of interchangeable tools, enabling safe and efficient removal of components without causing damage to the substrate or neighboring parts.
Available Models
Compact, economical single-jet version of the HGRS system.
Identify By
The mounted single jet and work-holder distinguish this self-standing unit from “Midas N2 Subsystems” sold to OEMS for installation on automated assembly equipment.
Problem Areas
- Status: Operational, Current Production
- Support: Excellent all components current or replaceable by current production.
In 2010 we designed a more rigid shear system with vertical adjustment, greatly increasing options for accessing difficult-to-reach components. The new systems has a stronger lead-screw and carriage, increased travel, and is coupled to a non-slip chain and sprocket drive.
Identify By
Link chain and sprocket drive on back of machine shows vertically adjustable shear mechanism. N2 flood arms are relocated to upper front corners of sub-cabinet, and light guides bolt to cabinet shelf – so the “Gold Ring” is gone from the sub cabinet face.
Variants
Longer travel D5L8 (8″) and D5L12 (12″) versions are available.
Problem Areas
- Status: Operational, Current Production
- Support: Excellent all components current or replaceable by current production.
Customer feedback led to two HGRS-V improvements, a more ergonomic position for the operator shear knob, and a lead-screw-driven fine positioner for the work-holder.
Identify By
Right front corner shear knob, right side X-positioner knob, integral sub-cabinet with gold light guide mount, fixed-height shear mechanism. The right side knobs set these machines apart from earlier ones. Transitional units and retrofits to earlier machines are identifiable by a plugged hole in the front center of the cover where the earlier shear drive was located.
Problem Areas
Limited vertical clearance between top of work-holder and shear rod, caused as work-holder stack was raised to provide more heater block clearance for higher temperature preheat operations. Belt-driven shear can slip under heavy load.
- Status: Operational, lacks vertically adjustable, chain-driven shear mechanism
- Support: Excellent all components current or replaceable by current production.
The HGRS-IV had limited room for handling large parts- so the HGRS-V was designed with much more clearance. Vertical space between work-holder surface and shear tool is open as far as the shear belt and cabinet supports. This model also was the first supplied with our H5JAJT05 pure tungsten, tight-wound filament heaters.
Identify By
Center front-mounted shear knob, faceplate logo, wide stance cabinet support, integral sub-cabinet with gold light guide mount, fixed-height shear mechanism.
Variants
ou may find a few center knob machines with work-holder X-positioners, added as an option late in the production run or later retrofit.
Problem Areas
Center-mounted shear knob proved unpopular with some operators, belt shear drive can slip on high-shear applications. Earliest models still had ball-bearing horizontal positioners which become gritty and allow nozzle movement. Manual X-movement of work-holder proved crude for working between closely-spaced wire bonds.
- Status: OOperational, lacks X-positioner and other later refinements, but these are retrofitable options at overhaul.
- Support: Excellent all components current or replaceable by current production.
HGRS-1J Introduction
HGRS-V Hot Gas Rework Station
Key Industries
- Semiconductor, Solar & Electronics
We’re a made-in-USA manufacturer, specializing in equipment used to rework or inspect “Hi-Rel” (high-reliability) microelectronics. Midas-pioneered advanced rework processes are…
