Guangming Group Today Shares: What Are the Common Manufacturing Processes for T‑Type Dual Gears?

T‑Type Dual Gear - Common Manufacturing Processes

1. Machining Process (First‑choice for Heavy‑duty, High‑precision & High‑torque Applications)

Process flow: Cutting → Forging blank → Lathe turning (T‑shaped step, inner bore) → Gear hobbing / gear shaping → Deburring → Heat treatment → Inner‑bore grinding / end‑face grinding → Gear honing

1. Forged blanks of 45 Steel, 40Cr, 20CrMnTi

Application: Agricultural machinery gearboxes, speed reducers, construction machinery, heavy‑duty electric equipment

Advantages: High strength, impact resistance, large load‑bearing capacity, long service life

Disadvantages: Numerous working procedures, relatively high cost, long lead time; suitable for small‑batch production

2. Direct turning from round bar stock (without forging)

Application: Low‑load, low‑speed prototypes & trial‑production parts

Disadvantages: No forging of internal metal fiber, poor impact resistance

Heat‑treatment options: Quenching & tempering, high‑frequency quenching, carburizing quenching

2. Powder Metallurgy (PM) (Iron‑based Compaction & Sintering, Cost‑effective for Mass Production)

Process flow: Powder mixing → Die compaction (full T‑shape + dual‑gear formed in one press) → High‑temperature sintering → Sizing → Minor secondary machining (reaming)

Material: Fe‑Cu‑C (Iron‑Copper‑Carbon)

Advantages: One‑step forming of dual gear with T‑step directly compacted, nearly no cutting work, low cost, ideal for 100,000‑level mass‑production orders

Disadvantages: Limited density, cannot withstand extreme impact loads

Applications: Gear motors, home appliances, garden tools, light‑load gearboxes

3. MIM‑Metal Injection Molding (For Small‑sized, Complex & Precision T‑Type Dual Gears)

Process flow: Metal powder + binder → Injection molding → Debinding → High‑temperature sintering → Post‑treatment

Suitable for: Miniature dual gears with compact outline, thin T‑shaped step, small module and complex structure

Higher precision than conventional powder metallurgy; density close to forged steel

Main applications: Micro gearboxes, smart home devices, gears for precision medical equipment

Disadvantages: Higher unit price than standard powder‑metallurgy parts

4. Investment Casting (Lost‑wax Casting)

Process: Investment casting → Blank → Machining & gear hobbing

Rarely adopted for standard dual gears; mostly applied to large‑size, non‑standard trial‑run and low‑speed components.

Poor tooth‑surface accuracy; finish hobbing is almost always required afterwards, seldom selected for mass‑volume manufacturing.

5. Injection Molding (Plastic T‑Type Dual Gears)

Materials: POM, PA66 Nylon + Glass Fiber

One‑shot injection molding via mould

Features: Low‑noise, self‑lubricating, lightweight

Low‑load applications: Household appliances, toys, small transmission assemblies

Powder Metallurgy, Metal Injection Molding, Powder‑Metallurgy Gears

Guangming Group is a professional manufacturer focused on the R&D and production of metal‑forming technologies and wear‑resistant materials. Our main products cover powder‑metallurgy components produced by powder compaction and metal injection molding.

We have built a high‑caliber talent team. The founding team comes from Guangzhou Institute of Non‑Ferrous Metals, a research institute directly affiliated to a former national ministry‑level authority. With rich industry experience and strong R&D capabilities, our team delivers continuous innovation momentum for enterprise development.

The company has obtained 5 invention patents and more than 30 utility‑model patents. We have passed IATF16949 Quality Management System, ISO9001‑2015 Quality Management System, ISO14001 Environmental Management System and Intellectual Property Management System certifications, and owned international trademark registration.

We are recognized as an Innovative Enterprise of Guangdong Province, a Little‑Giant Sci‑Tech Enterprise of Guangzhou, a council member of Guangdong Powder‑Metallurgy Industry‑Technology Innovation Alliance, and a founding member of Guangzhou Advanced Powder‑Metallurgy Cluster Promotion Center.