Fireproof coating spraying construction process for steel member

The invention discloses a fire retardant coating spraying construction process for a steel member, which depends on the law of conservation of angular momentum, when the fire retardant coating is sprayed, the fire retardant coating is used as a mass point system to be sprayed around the steel member in an annular spiral motion manner, so that the gravity of the fire retardant coating and the supporting resultant force moment of spiral spraying are equal to or close to zero; according to the principle, the defect that some fireproof coatings are prone to falling off or being damaged due to insufficient adhesive force after being sprayed can be effectively overcome. 本申请公开一种钢构件防火涂料喷涂施工工艺，依靠角动量守恒定律，在防火涂料喷涂时将防火涂料作为一个质点系围绕钢构件呈环形螺旋运动喷涂，使得防火涂料的重力与螺旋喷涂的支撑合力力矩等于或接近于零；根据此原理可有效的改善一些防火涂料在喷涂后，其粘附力不足，导致涂层容易脱落或被破坏的缺陷。