High Performance Engine Case – Aluminium Block Assembly

Case introduction

The core steps of the machining process of this aluminum alloy engine block:

Base forming:

The cylinder block blank is formed by low-pressure precision casting, and the basic structure such as cylinder cavity, crankcase, and mounting bracket is cast in one piece to ensure the density and structural integrity of the material.

Precision Machining:

Through Multi-Process CNC Machining:

Fine boring cylinder hole to ensure the roundness, cylindricality and surface roughness of the hole (suitable for high-precision reciprocating movement of the piston);

Processing crankshaft bearing housings, oil circuits/water channels to ensure the sealing and circulation of each system;

Milling assembly surfaces and positioning holes to ensure accurate assembly of cylinder heads, oil pans and other components.

Intensive treatment:

The cylinder block is subjected to T6 heat treatment (solution + manual aging) to improve the mechanical strength and fatigue resistance of aluminum alloy, and to adapt to the high-load working conditions of high-performance engines.

It is the core component of a high-performance powertrain and features the following:

Lightweight design: Aluminum alloy material reduces the weight by more than 30% compared with cast iron cylinder blocks, improving the power-to-weight ratio of the whole vehicle;

High-performance adaptation: precision-machined cylinder bore, oil circuit/water circuit, support high speed and high pressure power output;

Structural integration: The integrated casting + CNC machining structure reduces the assembly link and improves the reliability of the powertrain