The anti rust requirements for the patio lounge set need to be analyzed based on the specific material, with a focus on whether the metal parts have been properly treated. The following is a key point explanation:
1. Cast iron/wrought iron frames must be rust proof
This type of material is naturally prone to rusting, especially at welds and screw joints. When leaving the factory, the surface usually has a baked paint layer, but long-term exposure to rain or humid coastal environments can cause rusting. Once paint peeling or rust spots are found, they must be immediately polished and rust removed, and rust proof primer and outdoor metal paint must be applied, otherwise rust will spread.
2. Aluminum alloy frame does not require additional rust prevention
Aluminum itself is resistant to oxidation, but inferior products may exhibit slight oxidation (white spots) on the cutting surface or screw holes. After daily rinsing, simply wipe dry. It is strictly prohibited to paint or apply oil as it may damage the oxidation protective layer. If the connecting component is an iron screw, it is necessary to apply anti rust grease separately to the screw.
3. Beware of cheap materials for stainless steel components
The bracket or screw labeled as "stainless steel" will still rust if made of 201 low-grade steel. It is recommended to check the joints once a year and use stainless steel cleaning paste to wipe any rust spots. Before the rainy season, a thin layer of transparent anti rust wax (such as car chassis wax) can be applied to the gaps.
4. Priority of rust prevention for mixed materials
Metal foot covers: The metal foot pads at the bottom of the plastic chair legs are prone to water accumulation and rust, and need to be removed, cleaned, and dried
Woven metal buckle: The concealed part of the metal connection buckle of the wicker chair is prone to moisture accumulation, and a cotton swab dipped in anti rust oil should be applied
Spring structure: recliner with telescopic function, with a focus on maintaining metal slides and hinges
5. Incorrect anti rust method accelerates damage
Painting aluminum → It is more difficult to repair cracked paint skin
Apply butter to cast iron parts → sticky ash and clumping block joints
Use sandpaper to vigorously grind rust spots → destroy the intact paint layer
Principle of simplified handling:
▶️ Must do rust prevention: cast iron, wrought iron, iron screws
▶️ Occasional maintenance: low-priced stainless steel joints, metal foot pads
▶️ Completely unnecessary: pure aluminum alloy, solid stainless steel (grade 304 or above)
▶️ Emergency plan: Use waterproof cover during rainy season and clean the mud and sand on the chair legs every month
