Performance core of non-magnetic temperature resistance of titanium alloy products for Baoji Dingding titanium | permanent magnet motor

In high-end equipment such as new energy vehicle drive motor, wind power permanent magnet generator and industrial servo motor, the core components such as isolation cover, end cover and heat dissipation sleeve need to meet the three core requirements of "no magnetic interference, high temperature aging resistance, lightweight and energy saving". Baoji Dingding titanium products Co., Ltd. relies on the material and precision processing advantages of "China Titanium Valley", focuses on the R&D and production of TC4, TA2, TC11 and other special titanium alloys for motors, strictly follows the IEC 60034 standard, and realizes the magnetic conductivity of the isolation cover ≤ 1.005 μ ₀, and the dimensional accuracy reaches IT6 level through the integrated process of "precision rolling+CNC milling", which perfectly meets the operation requirements of high speed and high power density of the motor.

1、 Core advantage: performance barrier of titanium alloy products for motors

Compared with traditional motor materials such as stainless steel and aluminum alloy, titanium alloy products have unique advantages in motor working conditions and solve the industry pain points of "magnetic interference, high temperature failure and weight redundancy":

Ultra low permeability characteristics

The magnetic permeability of TA2 pure titanium and TC4 titanium alloy is ≤ 1.005 μ Ω, which is close to the vacuum magnetic performance, and can effectively isolate the magnetic field interference between the motor stator and rotor, so that the magnetic energy utilization rate of the permanent magnet is increased by 8%, and the magnetic loss is reduced by 50% compared with that of the non magnetic steel.

High temperature stability and aging resistance

The temperature resistance of TC11 titanium alloy is up to 500 ℃, and the temperature resistance of TC4 is 400 ℃. Under the high temperature environment of continuous operation of the motor, the mechanical property attenuation is ≤ 2%, without aging deformation, and the service life is more than 3 times longer than that of aluminum alloy parts.

Advantages of light weight and energy saving

The density is only 4.51g/cm ³, which is 45% less than that of non-magnetic stainless steel and 55% less than that of copper alloy. Taking the 100kW motor isolation cover as an example, the weight was reduced from 8kg to 4.4kg, which directly reduced the motor inertia and improved the response speed.

Corrosion resistance and vibration resistance

The dense oxide film on the surface can resist the corrosion of motor cooling medium, and the corrosion rate of 5000 hours salt spray test is ≤ 0.0002mm/year; Tensile strength ≥ 960mpa, able to withstand the vibration impact of the motor at high speed, without fatigue crack.

2、 Matching of core products and materials: accurate matching of motor requirements

For permanent magnet motors with different power levels and application scenarios, combined with the material characteristics of TC4, TA2 and TC11, standardized and customized solutions are provided, covering the core functional components of the motor:

3、 Core application: accurate matching of material properties and motor scenes

1. field of new energy vehicles: the "core of non-magnetic energy saving" of drive motor

The driving motor of new energy vehicles has strict requirements for lightweight and magnetic properties. Titanium alloy products can achieve performance breakthroughs:

-TC4 titanium alloy isolation cover is used for 80kW new energy vehicle drive motor, with permeability ≤ 1.003 μ ₀, effectively avoiding magnetic field interference, improving motor efficiency by 3%, reducing weight by 40%, and extending vehicle range by 5-8km;

-TC4 motor end cover is suitable for new energy bus drive motor, with tensile strength ≥ 960mpa, and can withstand the vibration and impact of motor at 15000rpm high speed. Its service life is 3 times longer than that of aluminum alloy end cover, reducing after-sales maintenance costs.

2. wind power and Industry: the "protection of temperature and corrosion resistance" of high-power motors

The operation environment of wind power and industrial high-power motors is complex, and titanium alloy products can withstand extreme working conditions:

-TC11 titanium alloy end cap is used for 2MW wind power permanent magnet generator. It has no aging deformation under 450 ℃ high temperature and sea wind corrosion environment. Compared with the steel end cap, it reduces the weight by 45%, reduces the engine room load of the fan, and improves the operation stability;

-TA2 pure titanium heat dissipation sleeve is used for explosion-proof motor in chemical industry. It is resistant to acid and alkali cooling medium corrosion. It has no corrosion after 5000 hours of operation. The heat dissipation efficiency is 15% higher than that of stainless steel sleeve, ensuring long-term stable operation of the motor.

3. medical and high-end equipment: the "non-magnetic clean carrier" of precision motors

-Medical equipment: TA2 non-magnetic isolation cover is used for supporting motor of MRI equipment, with permeability ≤ 1.002 μ ₀, no magnetic field interference, ensuring MRI image accuracy, excellent biocompatibility, and meeting medical health standards;

-High end servo: TC4 motor bracket is used for the servo motor of semiconductor manufacturing equipment. The dimensional accuracy reaches IT6 level. The lightweight feature increases the motor response speed by 20%, meeting the high-frequency control requirements of precision machining.

4、 Quality assurance: motor level whole process control system

1. exclusive control of raw materials: use ≥ 99.8% high-purity sponge titanium, and the composition deviation of titanium alloy for motor is ≤ 0.05%. Each batch of raw materials is attached with ICP-MS composition analysis report, and non-magnetic materials are additionally provided with magnetic permeability test certificate;

2. precision manufacturing process: the process of "multi roll precision rolling+five axis NC machining+laser calibration" is adopted, and nano processing equipment is equipped. The roundness error of the isolation cover is ≤ 0.01mm to ensure the motor assembly accuracy;

3. full inspection and verification: all of them passed the permeability test, dimensional accuracy test, mechanical property test and temperature aging test, and the motor components of new energy vehicles were additionally tested for vibration fatigue and salt spray corrosion;

4. customized surface treatment: it can provide services such as precision polishing, anodic oxidation, nitriding treatment, etc., improve the corrosion resistance, wear resistance and heat dissipation performance of parts, and meet the use requirements of different motors.

Baoji Dingding titanium: the core supplier of titanium alloy products for electrical machinery

The company is located in Baoji high tech Zone, the "China Titanium Valley". It has three special production lines for titanium alloy products of motor type, with an annual production capacity of 600 tons. It has passed the ISO9001 quality management system and iatf16949 automotive industry certification, and has the supporting qualification for new energy vehicles and wind power equipment. The products have served leading enterprises such as BYD, Ningde times, Goldwind technology, etc., and become the preferred partner of titanium alloy products for motors.

Technical advantages: core competence of precision forming and size control of non-magnetic materials

Complete qualifications: ISO9001, iatf16949, motor level testing certification

Service guarantee: 24-hour technical support, motor condition adaptation service

Scheme consultation: send motor power and working condition parameters to 530975155@qq.com Free access to material adaptation scheme and performance test report