disable Carbon and Steel Rotor

I tried to disable the crafting recipe of the Kinetic Gearbox Rotor (Carbon) and the one made out of refined iron, since i read something about disableing recipes in the config, but i made no success

Can someone help me with that?

[recipes]
; To modify recipes or add custom recipes, copy the corresponding .ini file to

; "minecraft/config/ic2" and modify it.

;

; Disable IC2 crafting recipes with the specified output, comma separated list.

; Recipes in the additional section below aren't affected.

; Format: <name>[@metadata], e.g. minecraft:bucket to disable IC2's bucket recipe from tin.
disable =
; Purge crafting recipes with the specified output, including vanilla and mod ones, comma separated list.

; Recipes in the additional section below aren't affected.

; Format: <name>[@metadata], e.g. minecraft:tnt to disable crafting tnt.
purge =
; Enable crafting of IC2 coins, otherwise they have to be spawned in and are thus limited.
allowCoinCrafting = true
; Allow only IC2 circuits to be used in IC2's recipes.
requireIc2Circuits = false
; Adjust smelting recipes to always output IC2 items if available.
smeltToIc2Items = false
; Ignore invalid recipes.
ignoreInvalidRecipes = false

This is the part in the config that i mean. I think that it must be something in the red colored line, but what do i have to write there?