Products Features of China Shandong Huachen(TECH) Connecting Rod Co., Ltd

Manufacture your connecting rod with no compromise

As a IATF16949 certified connecting rod manufacturer, Huachen(TECH) company, based in China, provides a wide range of connecting rod for diesel engines.

Find our connecting rod advantage features in below:

1. The stress release of the connecting rod blank and the closure smoothness of the metal flow line of the integral forging are much higher than that of the split forging, because the split forging is to forge the connecting rod body and the connecting rod cap separately, which increases multiple edges and corners compared with the integral forging, increases the stress concentration points, and is easy to produce the vortex of the metal flow line, which greatly reduces the strength of the connecting rod; The mechanical properties and hardness uniformity of the integrally forged connecting rod are higher than that of the split forging. There will always be differences in the temperature and pressure control, quenching and tempering control during the forging process, which will affect the overall mechanical properties and hardness uniformity of the connecting rod, while the integrally forged connecting rod does not have this problem;

2. The connecting rod cap is a single stiffener, and a counterweight block (as shown by the arrow) is added at the top. When the engine requires special weight, it can be processed here. On the premise of ensuring the product weight, the strength of the connecting rod cap is increased, and the appearance of the connecting rod is improved on the premise of ensuring the product quality.

3. Connecting rod cap arc bolt supporting surface and transition arc angle

The supporting surface of the connecting rod cap is in a circular arc shape, which fits the circular head of the bolt. Compared with the supporting surface of the linear connecting rod cap bolt, the connecting rod cap has a circular arc shape due to less material removal, which improves the strength of the connecting rod cap and reduces the risk of fracture of the connecting rod cap here; At the same time, the transition arc angle at the root of the connecting rod cap support surface is increased, which greatly reduces the stress concentration and improves the strength of the connecting rod cap without interference with the bolt flange.

4. Fitting method of connecting rod body cover

Connecting and positioning method of connecting rod body and connecting rod cap: positioning pin positioning, connecting rod body tapping and bolt locking. This positioning and locking method is an independent individual, reducing the risk of bolt loosening and thread withdrawal caused by high-frequency vibration of connecting rod; The locating pin is an interference fit between the connecting rod cap and the pin hole, and the connecting rod body is a clearance fit with high positioning accuracy; Compared with the traditional bolt and nut positioning locking method, it has great advantages in both positioning accuracy and wire withdrawal risk, and eliminates the risk of fatigue fracture caused by stress concentration caused by the processing of the tail on both sides of the big end of the connecting rod body;

5. Connecting rod excircle

On both sides of the big end of the connecting rod body cover, the connecting rod body cover is machined in a circular arc style. This style can not only improve the appearance of the connecting rod, but also improve the impact strength of the big end of the connecting rod. It can withstand the rapidly changing dynamic load in the engine and operate stably and normally.