Custom Precise Temperature High Performance Furnace for Improve Steel Components Quality

• Customization: Available
• Certification: CE, ISO
• Place Style: Horizontal
• Model NO.: RT3-105-7
• Range of Applications: Industrial
• Type: Heat Treatment Furnace
• Fuel: Electric
• High Temperature: 1200 ºC
• Medium Temperature: 950 ºC
• Low Temperature: Within 650ºC
• Controls: Micro-Computer Program
• Power Output: Adjustable
• Transport Package: Film and Container
• Specification: Customized
• Trademark: RUNHIGH
• Origin: China
• HS Code: 8514101000
• Production Capacity: 50000
• Package Size: 200.00cm * 300.00cm * 200.00cm
• Package Gross Weight: 2000.000kg

Product Description

Heat Treatment Knowledge - Tip 14

Effect of Heat Treatment Stress on Quenching Cracks (II)

Under normal circumstances, cracks can only occur in non-hardenable components. Although rapid overall cooling is a necessary condition for their formation, the true cause of these cracks does not lie in the rapid cooling itself (including within the martensitic transformation zone). Instead, it stems from the significantly reduced cooling rate at localized positions of the quenched part (determined by geometric structure) within the high-temperature critical range, resulting in insufficient hardening. The transverse fractures and longitudinal splits that occur in large non-hardenable components are caused by residual tensile stresses, predominantly thermal in nature, acting on the core of the quenched part. These cracks first form at the unhardened central cross-section and propagate outward. To prevent such cracks, a water-oil dual-medium quenching process is often employed. In this process, rapid cooling during the high-temperature stage aims solely to ensure the outer layer of metal achieves a martensitic structure. From the perspective of internal stresses, this rapid cooling is detrimental rather than beneficial. Furthermore, the purpose of slow cooling in the later stages is not primarily to reduce the expansion rate of martensitic transformation or the magnitude of structural stresses, but rather to minimize cross-sectional temperature differences and the contraction rate of the metal at the central cross-section, thereby reducing stress levels and ultimately preventing quenching cracks.

Specification

High-Quality Car-Type Furnace

The car-bottom furnace is a periodic operation furnace with an undivided furnace chamber. The structure of the car-bottom furnace: The furnace base consists of a movable car. Before heating, the car is loaded outside the furnace, with the workpieces placed on dedicated spacer blocks. The car is then pulled into the furnace by a traction mechanism for heating. After heating, the car is pulled out of the furnace by the traction mechanism for unloading. The heated workpieces are then lifted by a crane to forging equipment for processing.

Guillotine. Lift motor furnace must be protected by limit switches. 

Thermocouple K or S type demand on different furnace

The shell of the furnace body and the trolley are welded with high-quality steel plates and sections.

The Furnace Lining

 The furnace lining is made of aluminum silicate fiber, which has strong high temperature resistance and good thermal insulation performance. The bearing part is built with heavy firebrick to enhance the structural strength of the furnace lining. In order to ensure that the heat transfer at the bottom of the trolley is not very high, the thermal insulation layer of the trolley is made of tridacidal refractory fiber and diatomite insulation brick composite structure to improve the thermal insulation performance of the furnace body

The heating element adopts 0Cr27AL7M02 high resistance alloy produced by Shougang and is arranged on the furnace door, furnace side, furnace back wall and platform car.

The trolley is equipped with a pressure-resistant and high-temperature-resistant cast steel furnace bottom plate for bearing workpieces. To prevent the oxide scale generated after workpiece heating from falling into the heating element area through the gaps between the bottom plates and causing damage to the heating elements, an inserted contact method is adopted at the junction between the furnace bottom plate and the furnace body.

The Temperature Control System

The Temperature Control System uses program automatic temperature control, which can greatly save electric energy, and make the ideal heat treatment process curve achieve high precision in practical application.

Key Configurations

The box type annealing furnace is divided into high temperature furnace, medium temperature furnace and low temperature annealing furnace. The high temperature furnace is within 1200℃, the medium temperature furnace is within 950℃, and the low temperature annealing furnace is within 650℃, respectively

Technical Specifications

(Custom configurations available upon request.)

Model No.	Power kw	Voltage V	Maximum temperature ℃	Furnace dimensions mm L×W×H	No-load loss power kw	Temperature control Accuracy ℃	Furnace temperature Uniformity ℃	Maximum loading capacity kg
RT3-105-9	105	380	1200	1800×900×650	≤17	±1	±8	3000
RT3-150-9	120	380	1200	2000×1000×800	≤32	±1	±8	4500
RT3-220-9	220	380	1200	2500×1300×1000	≤50	±1	±8	7000
RT3-250-9	250	380	1200	2400×1500×800	≤60	±1	±8	8300
RT3-270-9	270	380	1200	3000×1500×1000	≤65	±1	±8	9000
RT3-280-9	280	380	950	2400×2000×1500	≤67	±1	±8	10000
RT3-300-9	300	380	950	4500×1200×1300	≤70	±1	±8	15000
RT3-400-9	400	380	950	4000×2000×1500	≤72	±1	±8	20000
RT3-500-9	500	380	950	6000×2000×1500	≤75	±1	±8	22000
RT3-600-9	600	380	950	6000×2000×2000	≤78	±1	±8	25000

Other Machines

Besides furnaces, we also supply other customized machines. We can provide the whole production line machines.

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

Shandong Runhigh Machinery Tech Co., Ltd 

 Shandong Runhai Machinery Technology Co., LTD was established in 2010, located in Linqu County, Weifang City, Shandong Province, with a land area of 4,500 square meters The company specializes in the design and production of industrial machines. It has provided a large number of various specifications and types of industrial machines to domestic and international machinery, metallurgy, military,electronics, aerospace, automotive, and chemical industries. Through long-term use by customers, the company has received praise. 

Shandong Runhai Machinery Technology Co., Ltd. actively carries out the development of scientific research projects, has accumulated rich experience in design and manufacturing, and has trained a strong technical research and development team and after-sales service guarantee team. The company's products are exported to more than 80 countries and regions, has been praised by domestic and foreign customers.

 

The company's main products are: furnace, casting equipment, sand casting equipment, shot blasting machine, cooling tower and production line, food machine and also involve prefab house trade.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

Electric furnace, Molding equipment,Shell making equipment,Wax processing equipment, Roasting and casting equipment, Post-processing equipment or other equipment. We also provide prefab houses service.

FAQ

 Q1. What is your after-sales service policy?  

A: We have a dedicated pre-sales and after-sales team that guarantees a response within 8 hours to resolve any technical issues.  

 

 Q2. What is the warranty period for your products?  

A: We provide a 12-month warranty, covering manufacturing defects. (Excludes damage from improper operation or normal wear of consumable parts.)  

 

 Q3. How do you ensure product quality?  

A: Our furnaces are CE-certified and undergo strict double-inspection before shipment to guarantee performance and safety.  

 

 Q4. What is your standard delivery time?  

A: Typical lead time is 45 days (custom designs may vary). We prioritize on-time delivery to keep your projects on schedule.  

 

 Q5. Are you a manufacturer or a trading company?  

A: We are a direct manufacturer with 10+ years of expertise in furnace production, ensuring full control over quality and customization.