SU927354A1 - Composition of lubricating washer for pressing - Google Patents

Description

(54) COMPOSITION OF LUBRICATING WASHER FOR PRESSING

one

The invention relates to the processing of metals by pressure, and more specifically to lubricants for pressing.

A lubricant containing a solid lubricant, preferably gypsum, and a blowing agent, preferably polyacrylamide 1, are known.

The disadvantage of this lubricant is the low quality of the press products due to the plaster cast on the matrix walls.

The purpose of the invention is to increase the quality of pressing products.

This goal is achieved by the fact that the composition containing a solid lubricant, mainly gypsum, and a blowing agent, mainly polyacrylamide, additionally contains an oxytylated alkylphenol at the following ratio of components, weight. %: solid lubricant 92-95; gasifier 4-6; ethoxylated alkylphenol 1-2.

Lubrication washer of the proposed composition is made as follows.

With a dry granulated blowing agent, mainly polyacrylamide brand PAA-C-C on THE 95-64-71, mixed solid lubricant, predominant. but gypsum, in a powdered state. Transfer the mixture to homogeneity, add water, ethoxylated alkylphenol OP-7 or OP-10 according to GOST 8433-57 and mix the resulting

5 mix until pasty. The resulting mass is filled into the mold with a pre-lubricating machine oil, and the mass in the mold is compressed under a press. The resulting washer is removed

- from the mold, stand up to hardening and dry. When pressing a heated billet installed with a gap in the matrix receptacle, a lubricating washer placed on the workpiece is destroyed by a punch. Into the gap between the receiver

Claims (2)

15 dies and stocking. Subsequently, the powdered medium compacted to such an extent that it fairly evenly distributes the punch pressure over the end surface of the workpiece, creating a pressing mode according to a pattern close to all-round compression, and forming an insulating layer between the workpiece and the die. In this layer, a solid lubricant forms a layer of solid lubricant, the blowing agent, evaporating upon contact with the heated metal, creates an additional gaseous insulating layer, and the oxymetalized alkylphenol, which particles envelop the particles that make up the solid lubricating layer, eliminates sticking on the solid matrix. lubricant. The use of ethoxylated alkylphenol in the composition of lubricating washers increases the efficiency of the press. DETAILED DESCRIPTION OF THE INVENTION Composition of a lubricating washer for pressing, containing a solid lubricant, mainly gypsum, and a blowing agent, mainly polyacrylamide, which, in order to improve the quality of pressing products, contains additional ethoxylated alkylphenol in the following ratio of incoming components, %; solid lubricant 92-95, a blowing agent 4-6, oxethylated alkylphenol - 1- 2. Sources of information taken into account during the examination 1. USSR author's certificate No. 694240, cl. B 21 C 23/32, 1978 (prototype).