DAU NHON

1.Khai niem chung:

1.1Ma sat mai mon boi tron

2.Cong dung,yeu cau va phan loai:

2.1 Cong dung

a.Boi tron giam ma sat mai mon

-Giua hai chi tiet tac dung ma sat nhau co dau nhon ->ma sat uot-Fms giam->giam maim on

b.Lam mat chi tiet may

Dau nhon o the long khi luu thong trong be mat ma sat no thu nhiet

Dau chay tuan hoan qua ket lam mat dau ->thu nhiet qua moi vong tuan hoan

3.Bao kin chi tiet may

4.Rua sach chi tiet may

5.Bao ve chi tiet va chong oxi hoa

Dau tao thanh lop mang vung chac bao quanh chi tiet ngan hoi nuoc hoac chat mon an mon tac dung vao be mat chi tiet de giu chi tiet lam viec lau dai.

2.2 Yeu cau

-Dau boi tron phai co do nhot, do dong dac xac dinh de boi tron tot trong dieu kien nhiet do,ap suat cao

-Dau boi tron khong chua tap chat an mon de bao ve be mat boi tron

-Co do on dinh li hoa cao de su dung bao quan duoc lau dai

-Dau boi tron de san xuat,gia thanh re.

2.3Phan loai

a.Theo nganh su dung.

+Dau boi tron : Giam ma sat mai mon, he thong truyen luc

+Dau thuy luc: (phanh) La nhiem vu truyen luc

+Dau cong nghiep:Chi boi tron thiet bi cong nghiep nhu may khau...

+Dau chuyen dung: Dau bobbin

b.Nguon goc:

+Dau co nguon gocx tu dau mo

-Nhieu hidrocac bon (t do soi >350 do C)

+Goc tong hop

+Goc dong vat (Dau bo)