Is your business ready for the hinge to pass the acidic 24-hour salt spray test? _Industry News

On November 22, 2010, China's Ministry of Industry and Information Technology issued the "Kitchen Home Furnishing Light Industry Industry Standard QB/T." This standard, which replaced the original China National Light Industry Council, was implemented on March 1, 2011. It specifically addresses the corrosion resistance testing methods for metal coatings and chemical treatment layers of light industrial products.

According to the standard, metal accessories used in kitchen furniture must undergo corrosion resistance treatment. The surface coating or plating should be able to withstand a 24-hour acetic acid salt spray test (ASS). The anti-corrosion ability of the product is classified into different grades: excellent product (Grade A) must achieve Grade 10, Grade B products must achieve Grade 8, and Grade C products must achieve at least Grade 7. This applies to handles and door hinges, with the lowest grade among them determining the overall test result.

Now, let's understand what the salt spray test entails. It is a standardized procedure that defines specific conditions such as temperature, humidity, concentration of sodium chloride solution, and pH value. It also sets technical requirements for the salt spray test chamber's performance. There are several salt spray test methods available, and the choice depends on factors like metal corrosion rate and sensitivity to salt spray. Commonly used standards include GB/T2423.17—1993, GB/T2423.18—2000, GB5938—86, and GB/T1771—91.

The salt spray test aims to evaluate a product's or metal material's resistance to corrosion caused by salt spray. The results of this test play a vital role in determining product quality. It is crucial to assess the accuracy and reasonability of the judgment made based on the salt spray test results.

There are three types of salt spray tests: neutral salt spray (NSS), acetate spray (AA SS), and copper accelerated acetate spray (CA SS). Among them, the neutral salt spray test is the most widely used. It involves spraying a 5% sodium chloride solution in a test chamber at 35 degrees Celsius to simulate accelerated corrosion in a seawater environment. The corrosion performance is evaluated based on the pH value, with neutral salt spray ranging from 6.5 to 7.2, and acid salt spray from 3.1 to 3.3. Therefore, 1 hour of acid salt spray is equivalent to 3-6 hours of neutral salt spray.

As China's economy grows rapidly and living standards improve, consumers are demanding higher product quality. Companies face complex challenges like professional complaints, competitor reports, and random inspections by government quality supervision bureaus. In this competitive market, Friendship Machinery remains composed. With its unique electroplating process, Friendship Machinery produces hinges that meet the 30-hour acidic salt spray test standard, surpassing most imported brands. Laboratory testing confirms that Friendship hinges conform to the EU EN standard, enduring 80,000 cycles, supporting loads of up to 75 pounds, and withstanding temperatures ranging from 50°C to -30°C.

Friendship Machinery has always believed that the success of enterprise management is reflected in product quality. Quality is not only a reflection of management, but also an embodiment of overall enterprise excellence. Friendship Machinery has been dedicated to innovation, technological advancement, and product quality. By continuously expanding and rectifying the market, they achieve greater development. It is essential to improve product quality fundamentally. This is accomplished by strengthening quality control at the source and preventing various quality issues. In the face of future challenges and tests, is your enterprise prepared?

AOSITE Hardware places great emphasis on product quality. Their hinge production follows strict standardization and quality control processes. The use of selected environmentally friendly raw materials and advanced production techniques ensures the production of safe, reliable, and eco-friendly products that are free from harm to people and the environment.