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LBT-MJ1250 Vacuum Oven for Mold Annealing

Name: LBT-MJ1250 Vacuum Oven for Mold Annealing
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

This equipment is suitable for applications such as high‑temperature baking, thermal drying, low‑vacuum sealing tests, oxygen‑free treatment, high‑temperature stress relief, and high‑temperature curing in industries including aerospace, automotive, industrial and mining enterprises, home appliances, laboratories, research institutions, and colleges and universities.

Category:

Environmental Testing Equipment

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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LBT-MJ1250 Vacuum Oven for Mold Annealing

Description

Product Introduction:

Product Features:

Vacuum degree measurement method: digital display of vacuum pressure (absolute‑type diffused silicon pressure sensor).

Temperature Controller: High-precision microcomputer‑based PLC temperature controller, featuring stepped temperature and pressure control with up to 100 segments and 100 cycle‑program settings. It employs PID control combined with empirical fuzzy logic, ensuring precise temperature regulation and allowing arbitrary setting of operating temperatures. The unit also includes data logging and storage, USB data export functionality, fault alarm and diagnostic query capabilities, as well as the ability to view temperature, pressure, and time‑history curves.

Enclosure material: 1. Made of high-quality A3 cold-rolled steel sheet with a thickness of 1.5 mm, welded to a 150×100×80 mm channel steel frame, and finished with an electrostatic powder coating. 2. The equipment control cabinet door and the side doors at the bottom are fitted with louvered hinge‑type latch mechanisms for easy opening.

Inner liner material: high-quality SUS304 stainless steel sheet, 3.0–4.0 mm thick, with a brushed finish; fully welded internally and finished with a polished surface.

Door sealing materials: 1. The tightness of the door closure is adjustable; a one-piece, Japan‑imported O‑ring silicone rubber seal ensures high vacuum inside the chamber, and the seal incorporates a water‑cooling feature. 2. The seal is mounted flush with the door surface using a stainless‑steel recessed‑groove design, minimizing corrosion of the seal by cavity fluids.

Insulation layer material: high-temperature-resistant ceramic aluminum silicate fiber blanket.

Safety features: independent over-temperature alarm with automatic cutoff of the heating power supply, leakage protection, vacuum pump overheating and overload protection, compressor overheating and overload protection, phase-sequence protector, grounding protection, and other safeguards.

Technical Specifications:

Product Name	LBT-MJ1250 Vacuum Oven for Mold Annealing
Temperature control range	RT+15～500℃
Temperature resolution	±0.1℃
Temperature fluctuation degree	±0.3℃
Sensor accuracy	±0.1℃
Vacuum degree control range	100 kPa~0.1 kPa
Design and Maximum Vacuum Level	50Pa
Pressure resolution	0.1KPa
Vacuum degree accuracy	± 10%Pa
Definition of vacuum pressure	Absolute pressure
Vacuum leak rate	≤12h/500Pa
Inert gas flow rate	0–100 L/min, adjustable
Control Panel	7-inch color touchscreen
Cavity dimensions (width × depth × height)	100012501000 (mm)
Actual studio size (Width * Depth * Height)	Approx. 7801200950 (mm)
Mother-and-child car dimensions (Width * Depth * Height)	Approx. 5501100750 (mm)
Vacuum timing automatic evacuation	Automatic vacuum extraction is controlled via the PLC’s upper and lower limit relays, with features for delayed vacuum pumping and timed on/off operation.
Time required for vacuum formation	Less than 3–5 minutes
Time for vacuum relief	Less than 3–5 minutes
Enclosure structure	It adopts a vertical chamber design, with the upper section serving as the working chamber equipped with three internal partitions, and the lower cabinet housing a vacuum pump and cooling pipelines.
Heating method	Internal cavity‑mounted heating, with four‑sided heat distribution and excellent temperature control accuracy.
Mother–child car section	1. The main carriage is fabricated by welding stainless steel square tubing measuring 30×60 mm, equipped with anti‑derailment pins, and features heavy-duty casters with load‑bearing capacity and brakes on its underside. 2. The carrier is fabricated by welding stainless steel square tubing measuring 30×60 mm; its internal partition guide strips feature an L‑shaped design, allowing for convenient and flexible removal of the partitions. 3. The bottom of the carrier is equipped with V‑shaped high‑temperature stainless steel casters, which are used in conjunction with V‑shaped stainless steel rails inside the chamber.
Vacuum system	Screw pump pumping capacity: 50 m³/h
Exhaust port	KF40 vacuum port
Power	30KW
Power supply	AC 380 V / 50 Hz, three-phase five-wire system

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

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

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

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

Which materials can be measured by your Vicat softening point tester?

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.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

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.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

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.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

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

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

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

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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