Resistance Tester for Molten Metal Droplet (Splash) Impact Performance
Category：Other
Introduction
Introduction
The Resistance Tester for Molten Metal Droplet (Splash) Impact Performance is designed to evaluate the protective ability of fabrics and composite materials against burns caused by molten metal splashes. The instrument determines the number of molten metal droplets required to produce a 40K temperature rise behind the sensor when the droplets impact the specimen at a controlled angle.
This tester is widely used in protective clothing manufacturing, safety research institutes, and textile testing laboratories to ensure compliance with international and national safety standards. Its design emphasizes operator safety, precise control, and accurate measurement.
Standards Compliance
ISO 9150 — Protective clothing. Determination of material performance against molten metal splashes.
EN 348 — Protective clothing. Heat-resistant and fire-resistant. Determination of heat transfer in proximity to fire.
GB/T 17599 — Protective clothing for welding.
AQ6103 — Welder’s protective gloves.
GB 8965.2 — Protective clothing. Flame-retardant protection, Part 2: Welding clothes.
Performance Features & Advantages
Controlled Molten Metal Droplet Generation:
Oxygen and acetylene flow regulation devices provide standard gas flow for welding nozzles.
Oxygen and acetylene pressure regulators precisely control inlet pressures (O₂: 250 kPa, Acetylene: 50 kPa).
Oxyacetylene torch with 1.2 ± 0.1 mm nozzle diameter for melting metal strips.
Precise Droplet Control:
Stepper motor drives the metal strip, with adjustable running speed.
Droplet guiding mechanism with high-temperature anti-sticking guide groove at 45° angle.
Accurate Temperature Measurement:
Fabric temperature sensor device includes refractory insulating rock wool support and armored platinum resistance thermometer for precise back-of-sample readings.
Pre-tension Control:
Counterweight copper hammer device provides a pre-tension of 175g ± 0.5g for consistent testing.
Data Monitoring & Analysis:
Droplet counting device displays number and frequency of droplets during testing.
Standard software with touch-screen human-machine interface shows temperature rise curves and test parameters in real time.
Operator Safety:
Protective cover encloses the entire machine to ensure tester safety during molten metal operations.
Technical Parameters
| Specification | Details |
|---|---|
| Oxygen Pressure Control | Up to 250 kPa |
| Acetylene Pressure Control | Up to 50 kPa |
| Welding Torch Nozzle Diameter | 1.2 ± 0.1 mm |
| Metal Strip Driving | Stepper motor, adjustable speed |
| Droplet Guide Angle | 45° |
| Fabric Pre-Tension | 175g ± 0.5g |
| Temperature Sensor | Armored platinum resistance thermometer |
| Droplet Counting | Number and frequency display |
| Software & Interface | Touch-screen HMI with temperature curve display |
| Protective Cover | Full enclosure for operator safety |
FAQ
1. What types of materials can be tested?
The tester is suitable for protective clothing fabrics, composite materials, and welding garments designed to resist molten metal splashes.
2. How is the molten metal controlled?
Oxygen and acetylene flow and pressure are precisely regulated, and a stepper motor controls the metal strip to ensure uniform droplet production.
3. How is temperature measured on the fabric?
A platinum resistance thermometer mounted on a refractory insulating support accurately measures the temperature rise on the back of the specimen.
4. Does the machine ensure operator safety?
Yes. The tester is fully enclosed with a protective cover and includes automated controls to minimize risk during testing.
5. Can test data be monitored in real time?
Yes. The standard testing software with a touch-screen interface provides real-time droplet count, frequency, and fabric temperature rise curves.
