China Tempering After Hardening Manufacturers Factory Suppliers
Our company has been engaged in the production of Industrial Tempering, Carburizing, Induction Heat Treatment for many years and has rich experience. We continue to introduce products with a sense of design, beautiful appearance, stable performance, and convenient operation. It is our unremitting goal to let users buy with confidence and use them satisfactorily. We will always serve customers with an innovative spirit and provide customers with high-quality and low-cost products. We take "high quality, low price, fast delivery, good service" as the goal, respect talents, pay attention to technology, and constantly develop Tempering After Hardening with customer satisfaction. Our company is dedicated to providing excellent value to our customers. Our extensive network of logistics partners ensures that your products arrive safely and on time. At our company, we value transparency, honesty, and integrity. Through the unremitting efforts of our staff, our company's business has continued to develop and grow. In line with the people-oriented management concept, our company implements the development strategy of strengthening the enterprise with talents and creates a platform to gather talents.
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Tempering
Tempering is a mandatory post-quenching heat treatment. Fresh martensite is hard but brittle, with high residual stress. Without tempering, a quenched part is prone to cracking or fracture in...
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Cold Extrusion
Cold extrusion is a precision metal forming process that shapes material by forcing it through or around a die under high pressure at room temperature. Unlike cold heading, which upsets material...
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Isothermal Forging
Isothermal forging keeps both die and workpiece at the same temperature throughout the forming cycle — eliminating die chilling and enabling complex, near-net shape components in aluminum alloys...
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Multi-axis CNC Machining
Multi-axis CNC machining handles complex geometries in a single setup — eliminating multiple clampings and the tolerance errors they introduce. We run 3-axis, 4-axis, 5-axis simultaneous, and...
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Internal Spline Broaching
Internal spline broaching is a high-precision machining process that uses a multi-tooth tool — the broach — to cut internal spline profiles in a single pass. Each successive tooth removes a...
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Surface Grinding
Surface grinding uses a rotating abrasive wheel to produce flat surfaces with high dimensional accuracy and fine finish — removing oxide layers, correcting distortion, and preparing parts for...
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Spheroidizing Annealing
Spheroidizing annealing transforms the lamellar carbide structure in steel into a spheroidal (globular) form through controlled heating and slow cooling. This reduces hardness, improves...
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Carburizing
Carburizing is a thermochemical process that diffuses carbon atoms into the surface layer of low-carbon steels, increasing surface carbon content to approximately 0.8%. After quenching, this...
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Induction Hardening
Induction hardening uses electromagnetic induction to heat specific surface areas of a part — with heating times measured in seconds — followed by immediate water or polymer quenching. The rapid...
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Shot Blasting
Shot blasting is a mechanical surface preparation process that propels spherical metal shot at high velocity (65–110 m/s) using a centrifugal wheel . The impact of the shot removes mill scale,...
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Cold Extrusion Dies
We design, manufacture, and maintain cold extrusion dies entirely in-house — from geometry definition to carbide selection, heat treatment, surface coating, and ongoing repair. This vertical...
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Fine Blanking Dies
We design, manufacture, and maintain fine blanking dies entirely in-house — from V-ring geometry and clearance optimization to carbide selection, heat treatment, surface engineering, and ongoing...
The product procurement advice and technical guidance provided by this manufacturer enabled us to pay more attention to business operations, and the final product effect was very unexpected.
This company respects people-oriented, and promotes the spirit of loyalty, diligence, innovation and positivity. In terms of products, the company's philosophy is not to have more but to be refined.
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These principles today more than ever form the basis of our success as an internationally active mid-size company for Hot Forging Tooling, Chassis Clearance Shim, Shot Peening Service. Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the most professional tempering after hardening manufacturers and suppliers in China, also supports high quality customized service. With abundant experience, we warmly welcome you to buy durable tempering after hardening made in China here from our factory.


















