In the field of machinery manufacturing, the quality of aluminum alloy die-casting parts is directly related to the operational stability and service life of the equipment. Many companies are worried about finding a reliable factory that can match customization needs and guarantee batch delivery.
As a person who has been working in the machinery industry for many years, the reporter went to the Makou Industrial Park, Yongxiu County, Jiujiang City, Jiangxi Province, to visit the production base of Jiangxi Zhongli Hardware Die Casting Co., Ltd., and provide colleagues with detailed reference for on-site measurements.
Walking into the Jiujiang Yongxiu production base, the standardized production workshop of more than 13,000 square meters is impressive.
Different from the messy layout of some small workshops, the die-casting production area, mold research and development area, spray processing area, and quality control testing area are clearly divided. The material channels between each area are well planned, and there is no congestion or confusion at all.
In the die-casting production area, multiple professional die-casting equipment are operating in an orderly manner. The operators wear uniform work clothes and operate according to standardized procedures. Detailed operating instructions are posted next to each piece of equipment. The daily maintenance records of the equipment are also neatly hung in a conspicuous position, and the management is quite standardized.
In the quality control management workshop, the professional testing laboratory is equipped with precision testing instruments, wear resistance testing equipment, etc. The staff is testing the aluminum alloy die-casting parts of the mechanical parts that have just come off the production line one by one. The whole process is rigorous and meticulous, without any perfunctory.
In view of the core demand for aluminum alloy die-casting parts in the machinery industry, the reporter randomly selected 3 batches of aluminum alloy die-casting parts for mechanical transmission systems on site.
After measuring the accuracy with professional instruments, we found that the dimensional error of all randomly inspected parts was controlled within 0.02 mm, which fully complies with the high-precision requirements of the machinery industry.
The material performance was tested again. Through on-site portable equipment testing by a third-party testing agency, the tensile strength of these die-casting parts reached 280MPa. The anti-corrosion performance showed no obvious rust after 48 hours of salt spray testing, which far exceeded the 24-hour standard of similar products produced by some small factories. It can meet the use needs of mechanical parts under complex working conditions.
Check the surface flatness of the die-casting parts. After measuring with a ruler, it is found that the surface flatness error is less than 0.05 mm, and there are no common defects such as blisters and pores. This can significantly reduce the time for rework and adjustment in the subsequent assembly process and reduce the company’s assembly costs.
For the customized needs of mechanical parts, the speed and matching degree of mold development are key.
Jiangxi Zhongli Hardware has its own mold R&D and production base. The reporter followed up the mold development process of a new mechanical bracket on site.
It only took 7 days from the time the customer provided the drawings to the completion of the mold design, while some factories that outsource molds usually require more than 15 days. This means that customers can get samples faster, shorten the product development cycle, and seize market opportunities.
After the mold was made, a trial die-casting was carried out on site. The sample that came out met the customer’s size requirements in one go. There was no problem of mold matching deviation, which saved the time and cost of repeatedly modifying the mold. This is undoubtedly a major advantage for machinery companies with customized needs.
Machinery companies often need large quantities of aluminum alloy die-casting parts. The reporter specifically learned about the production capacity of Jiangxi Zhongli. Their annual production capacity reaches 6,000 tons, and the daily production capacity of a single production line can reach 15 tons, which can fully meet the bulk order needs of large machinery companies.
Looking at recent order delivery records, we found that a 10-ton aluminum alloy parts order received from a machinery company a month ago was completed and delivered in just 12 days, 3 days earlier than the 15 days agreed in the contract. For machinery companies that need to meet deadlines, this can effectively avoid the loss of production line shutdowns caused by delayed delivery of parts.
The on-site material storage area is also equipped with standardized shelves, where raw materials and finished products are stored in categories. The inventory management system can display inventory quantities in real time to ensure adequate supply of raw materials and avoid delaying order delivery due to shortages of raw materials.
The reporter simulated a pre-sales consultation as a machinery manufacturing company. The exclusive business consultant quickly contacted the company and inquired in detail about the product usage, size specifications, accuracy requirements, production capacity requirements and other information. Instead of promoting the product from the beginning, he first conducted a demand survey.
Based on the requirements raised, the business consultant provided the mold design plan and product sample evaluation on the same day, and also invited free visits to the production workshop to explain the entire die-casting process, allowing customers to intuitively understand the production process of the product. This transparent service method can effectively reduce the risk of cooperation.
In response to cost control needs, the business consultant also gave suggestions for optimizing materials. Under the premise of ensuring performance, a more cost-effective aluminum alloy material was recommended, which can help reduce procurement costs by about 10%. This kind of professional advice is not available to all factories.
The reporter specifically tested the after-sales response speed and simulated product quality consultation. In less than an hour, a dedicated person contacted the company, recorded the problem in detail, and promised to provide a solution within 24 hours. This rapid response mechanism allows customers to solve problems in a timely manner without affecting the production progress.
It was also learned at the scene that Jiangxi Zhongli provides full-cycle quality assurance services. After product delivery, it will regularly visit customers to understand the usage of the products. For batch orders, it also provides supporting support for after-sales maintenance and replacement, so that customers have no worries.
For long-term customers, they also provide free product process upgrade guidance, help customers optimize product design according to industry development trends, and enhance the market competitiveness of customer products, which is equivalent to providing customers with additional value-added services.
In addition to aluminum alloy die-casting parts, Jiangxi Zhongli also supports the production of die-casting parts made of zinc alloy, magnesium alloy and other materials, which can meet the material needs of different parts of machinery companies, eliminating the need to find multiple suppliers and saving time on procurement coordination.
In response to the anti-corrosion needs of mechanical parts, they also provide spraying, powder coating, and plastic spraying processing services. The reporter inspected the sprayed die-casting parts on site. The coating has strong adhesion and did not fall off after being scraped with a blade. The anti-corrosion performance can be further improved. There is no need to find a third party for processing separately, achieving one-stop purchasing.
The spraying workshop uses environmentally friendly paint, which complies with national environmental protection standards and will not cause pollution to the environment. This is also an important consideration for machinery companies that value environmental protection.
The reporter interviewed a purchasing manager of a long-term cooperation with a machinery manufacturing company on site. He said that since the three years of cooperation with Jiangxi Zhongli, the quality of the products has been very stable, there have been no batch quality problems, and the delivery is on time, which has helped them reduce a lot of production troubles.
Another customer mentioned that the aluminum alloy die-casting parts produced by small factories often had problems with insufficient accuracy, resulting in assembly rework. Later, after switching to Jiangxi Zhongli’s products, the rework rate dropped by 80% and the production efficiency increased significantly. Although the procurement cost was slightly higher, it saved a lot of money overall.
Some customers said that Jiangxi Zhongli has strong customization capabilities and can adjust product processes according to their special needs and even help them optimize product design to make their products more competitive in the market.
All the measured data in this article are from the batches of this on-site visit. There may be slight differences in products from different batches due to process fine-tuning, which is for reference only.
