Products

DWC-196 Ferritic Liquid Nitrogen Drop‑Weight Impact Specimen Cryostat

This equipment employs liquid nitrogen cooling combined with PID temperature control, leveraging thermal equilibrium and recirculating convection to achieve automatic, uniform cooling and stable temperature maintenance of the specimen, fully meeting all temperature‑control requirements stipulated by national standards. The cryostat features intelligent instrument control, digital temperature display, automatic temperature regulation, automatic timing, and automatic alarm functions, offering simple and safe operation, rapid cooling, large capacity, high temperature‑control accuracy, and low energy consumption. In addition to NDT testing, this device can also perform DWTT tests as well as conventional drop‑weight and pendulum impact tests.

Keywords:

DWC-196 Ferritic Liquid Nitrogen Drop‑Weight Impact Specimen Cryostat
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  • DWC-196 Ferritic Liquid Nitrogen Drop‑Weight Impact Specimen Cryostat

Description


Product Introduction:

The DWC-196 liquid nitrogen drop‑hammer impact specimen cryogenic tester is a state‑of‑the‑art ultra‑low‑temperature refrigeration system newly developed in accordance with the requirements for low‑temperature equipment specified in GB/T 6803, “Drop‑Hammer Test Method for Determining the Nucleation Temperature of Ferritic Steels.” This equipment employs liquid nitrogen cooling combined with PID temperature control, leveraging thermal equilibrium and recirculating convection to achieve automatic, uniform cooling and stable temperature maintenance of the test specimens, fully meeting all temperature‑control specifications stipulated by the national standard.

This cryostat features intelligent instrument control, digital temperature display, automatic temperature regulation, automatic timing, and automatic alarm functions. It is easy and safe to operate, offers rapid cooling, a large chamber volume, high temperature‑control accuracy, and low energy consumption.

This equipment can perform NDT testing, as well as DWTT tests and conventional drop‑weight and pendulum impact tests.

Product Features:

The equipment is fitted with casters at the base for easy relocation; it includes a sample basket for convenient loading and retrieval of specimens; and it features a drain port for easy recovery of the refrigerant and cleaning. Additionally, it provides temperature‑reach alarms and insulation‑duration timers.

Protection features: whole-unit overload protection, leakage protection, phase-loss protection, phase-sequence protection, grounding protection, system pressure protection, and medium over-temperature protection (dry‑burn prevention), among others.

Technical Specifications:

Parameter Category Parameter content
Control range Room temperature to −196°C; (room temperature ≤ 25°C)
Cold room volume 130 mm (length) × 210 mm (width) × 70 mm (height)
Temperature control accuracy ±1℃
Digital temperature controller Resolution: 0.1℃
Cooling medium Liquid nitrogen
Power supply voltage AC 220V 50Hz
Power 200W
External dimensions 710 mm (length) × 590 mm (width) × 730 mm (height)
One liquid nitrogen tank 35L (with a freely selectable range of 30–150L)
Weight 52KG

Note on configuration:

1. Thermal insulation: Polyurethane foam insulation

2. Mixing device: 1 set

3. Temperature Control Unit: High-precision intelligent digital temperature controller (mounted on the main unit)

4. Sample holder: 1 piece

5. Specimen clamp: 1 piece

6. One 35L liquid nitrogen tank (with a capacity range of 30–150L to choose from)

7. One vacuum oil-free pump

8. One set of pressure gauge (mounted on the air pump)

9. Oil-water separator, 1 set

10. One set of liquid nitrogen–specific connecting tubing

Installation and Usage:

This cryostat features simple installation, convenient operation, rapid cooling, and high temperature-control accuracy. The specific installation steps are as follows:

1. Place the cryostat horizontally and lock the casters.

2. Connect the liquid nitrogen tank’s connecting pipe to the cryostat, using a PTFE sealing gasket at the interface to prevent liquid nitrogen leakage.

3. Connect the device to a 220V power supply and turn on the power switch.

4. Set the temperature control—turn on the cooling button—turn on the convection fan—set the constant-temperature duration.

5. Once the set temperature and the preset constant‑temperature duration are reached, the buzzer sounds an alarm; when the constant‑temperature timer is turned off, the buzzer stops sounding, indicating that the constant‑temperature phase has ended. To resume, re‑activate the constant‑temperature timer; when the temperature reaches the set point and the designated constant‑temperature period elapses, the buzzer will sound again.

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FAQs



A
We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

A
We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

A
It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

A
Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

A
This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

A
Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews


Southeast Asia Rubber & Polymer Factory|Purchase: Vicat Softening Point & Tensile Testing Machine

Southeast Asia Rubber & Polymer Factory|Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”
Middle East Construction Lab|Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

Middle East Construction Lab|Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”
European Plastic Pipe Manufacturer|Purchase: Ring Stiffness & Hydrostatic Burst Tester

European Plastic Pipe Manufacturer|Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

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