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Contacts：Jacky Zhang
Phone：+8618937103255
Email：hanyunpsq@gmail.com
Address：No. 167, Xuchang Road, Shangjie District, Zhengzhou City
Knowledge
Secrets of Heat Treatment for Key Hydraulic Breaker Components | Zhengzhou Hanyun Uses Austrian Aichelin Heat Treatment Furnace to Deliver High Hardness & Superior Toughness!
Release time：2026年2月2日
In the manufacturing of hydraulic breakers, the heat treatment process plays a decisive role in the performance of components. For core parts such as cylinder bodies, pistons, flat pins, chisels and bushings, high strength, high hardness and excellent impact toughness are essential to withstand the extreme working conditions of high-frequency impact.
As a professional hydraulic breaker manufacturer with 25 years of production experience, Zhengzhou Hanyun is equipped with world-class Austrian Aichelin heat treatment furnaces and adopts industry-leading heat treatment processes to greatly improve the durability and stability of every product.
What heat treatment procedures are applied to hydraulic breaker components? Below we give you a full professional explanation.
I. Normalizing: Refine Grains & Improve Structural UniformityNormalizing is a standard and widely used heat treatment process with the following goals:
✅ Refine the internal grains of steel materials
✅ Relieve internal stress of raw materials
✅ Improve the hardening uniformity in the subsequent quenching stage
✅ Relieve internal stress of raw materials
✅ Improve the hardening uniformity in the subsequent quenching stage
In hydraulic breaker production, normalizing is mainly applied to steel parts after initial forming, as a preparation for quenching & tempering. It homogenizes the material structure and lays a solid foundation for high-precision hardening.
II. Quenching: Enhance Hardness & Wear Resistance
Quenching is the core process to improve component hardness. By heating the material to a high temperature followed by rapid cooling, the surface layer is transformed into martensite, achieving outstanding hardness and structural strength.
Key hydraulic breaker parts that must undergo high-strength quenching:
🔧 Piston: Subjected to thousands of reciprocating impacts per minute, requiring ultra-high hardness and fatigue resistance
🔧 Chisel Tail: Undergoes continuous impact with the piston; quenching prevents deformation and fracture
🔧 Cylinder Guide Area: Requires high surface hardness to resist friction and wear from the chisel
🔧 Piston: Subjected to thousands of reciprocating impacts per minute, requiring ultra-high hardness and fatigue resistance
🔧 Chisel Tail: Undergoes continuous impact with the piston; quenching prevents deformation and fracture
🔧 Cylinder Guide Area: Requires high surface hardness to resist friction and wear from the chisel
Zhengzhou Hanyun Uses Austrian Aichelin Heat Treatment Furnace to Deliver High Hardness & Superior Toughness!
III. Tempering: Boost Toughness & Prevent Brittle Fracture
Although quenching greatly increases hardness, it also reduces material toughness and raises the risk of brittle fracture. For this reason, tempering is an indispensable follow-up process. Parts are reheated to a specific temperature range and held for a set time to release stress and restore toughness.
After tempering, components feature:
✅ High hardness retained, with minimal risk of brittle fracture
✅ Longer service life and stronger impact resistance
✅ Better adaptability to complex working conditions, including eccentric striking and dry firing
✅ High hardness retained, with minimal risk of brittle fracture
✅ Longer service life and stronger impact resistance
✅ Better adaptability to complex working conditions, including eccentric striking and dry firing
Why Choose Zhengzhou Hanyun?
✅ We adopt imported Austrian Aichelin fully automatic heat treatment furnaces, with precise temperature control and consistent batch quality.
✅ All heat-treated parts pass strict metallographic inspection and Rockwell hardness testing.
✅ Every key hydraulic breaker component undergoes the three-step process: normalizing + quenching + tempering.
✅ Independent heat treatment workshop, supporting customized heat treatment solutions for OEM & ODM projects.
✅ All heat-treated parts pass strict metallographic inspection and Rockwell hardness testing.
✅ Every key hydraulic breaker component undergoes the three-step process: normalizing + quenching + tempering.
✅ Independent heat treatment workshop, supporting customized heat treatment solutions for OEM & ODM projects.
Professional heat treatment defines the core quality of a hydraulic breaker. Choose Zhengzhou Hanyun – your reliable partner for heavy-duty hydraulic breakers that perform reliably even in the harshest construction environments.
We welcome engineering contractors, equipment rental companies and distributors to visit our factory. Contact us today for technical documents about our full heat treatment process and the latest factory quotation!
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